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Söz Y, Savkan İ, Biren S, Acar ZA. Primary Failure of Eruption: A Rare but Desperate Condition for Orthodontic Treatment. Turk J Orthod 2025; 38:56-63. [PMID: 40150885 PMCID: PMC11976322 DOI: 10.4274/turkjorthod.2024.2024.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Accepted: 11/26/2024] [Indexed: 03/29/2025]
Abstract
Tooth eruption is a highly complex mechanism that is controlled by many factors. Various mechanical, systemic, or genetic factors can cause eruption disorders. Primary failure of eruption (PFE) is known as an eruption disorder occurring due to non-syndromic genetic factors. It is frequently seen in the first and second molars and causes posterior open bite. It can be observed unilaterally or bilaterally. Studies show that mutations in many different genes that control the tooth eruption mechanism, mainly the PTH1R and KMT2C genes, constitute the genetic basis of PFE. Primary eruption disorders are very difficult to treat. It is known that the application of active orthodontic forces causes local ankylosis in the tooth and the failure of the tooth to return to its normal position. For this reason, determining the correct diagnosis and treatment method is very important. Although there are different treatment methods, the results of research about the success of these treatment methods are quite limited. This review aims to explain the etiology, diagnosis, and treatment of PFE in light of current genetic studies.
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Affiliation(s)
- Yaren Söz
- İstanbul Kent University Faculty of Dentistry, Department of Orthodontics, İstanbul, Türkiye
| | - İpek Savkan
- İstanbul Kent University Faculty of Dentistry, Department of Orthodontics, İstanbul, Türkiye
| | - Sibel Biren
- İstanbul Kent University Faculty of Dentistry, Department of Orthodontics, İstanbul, Türkiye
| | - Zeynep Ahü Acar
- İstanbul Okan University Faculty of Dentistry, Department of Orthodontics, İstanbul, Türkiye
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Lu K, Qian Y, Gong J, Li Z, Yu M, Wang H. A novel PTH1R mutation causes primary failure of eruption via the cAMP-PI3K/AKT pathway. Prog Orthod 2025; 26:7. [PMID: 39988614 PMCID: PMC11847765 DOI: 10.1186/s40510-025-00555-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2024] [Accepted: 01/21/2025] [Indexed: 02/25/2025] Open
Abstract
BACKGROUND Primary failure of eruption (PFE) is a rare disorder characterized by a posterior open bite. While mutations in the parathyroid hormone 1 receptor (PTH1R) gene have been demonstrated to cause PFE, the underlying mechanisms remain largely unknown. METHODS Whole exome sequencing was conducted to identify PTH1R variants in a PFE family. MG63 cells that stably expressed the corresponding mutant PTH1R were established using lentiviruses. Next, osteogenesis was assessed by measuring cell alkaline phosphatase activity, conducting alizarin red staining, and evaluating osteoblast-specific gene expression. Then, computational analysis of binding affinity and RNA sequencing were carried out. Lastly, rescue experiments were performed to validate the mechanism underlying the pathogenesis of PFE. RESULTS A novel PTH1R missense mutation (c.904G > A, p.E302K) was identified in a Chinese family affected by PFE. Moreover, the E302K mutation inhibited the expression of osteogenic-specific genes and proteins in MG63 cells. Computational analysis revealed the E302K mutation decreased the binding affinity of Gαs to the PTH1R protein. Consistently, cAMP accumulation assays demonstrated that the E302K mutation impaired the intracellular PTH1-34 -induced accumulation of cAMP. Further RNA sequencing analysis and validation experiments revealed that the PI3K-AKT signaling pathway was predominantly down-regulated in response to the E302K mutation. Finally, forskolin partially restored the effects of the E302K mutation on osteogenesis. CONCLUSIONS This study indicated that the E302K mutation in PTH1R decreased the binding affinity of PTH1R protein for Gαs, down-regulated the cAMP-PI3K/AKT signaling pathway, and inhibited osteogenesis, eventually leading to PFE. This study not only expands the genotypic spectrum of PTH1R mutations but also elucidates the underlying pathogenic mechanism of PTH1R-associated PFE.
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Affiliation(s)
- Kejie Lu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center of Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Ying Qian
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center of Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
| | - Jiaxing Gong
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China.
- Zhejiang Provincial Clinical Research Center of Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China.
| | - Zhiyong Li
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China.
- Zhejiang Provincial Clinical Research Center of Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China.
| | - Mengfei Yu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China.
- Zhejiang Provincial Clinical Research Center of Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China.
| | - Huiming Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
- Zhejiang Provincial Clinical Research Center of Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, China
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Liu J, Wang J, Huang R, Jia X, Huang X. The Shh-p38-NFATc1 signaling pathway is essential for osteoclastogenesis during tooth eruption. Tissue Cell 2025; 92:102643. [PMID: 39612595 DOI: 10.1016/j.tice.2024.102643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2024] [Revised: 11/25/2024] [Accepted: 11/25/2024] [Indexed: 12/01/2024]
Abstract
Tooth eruption, a critical stage in tooth development, is related to osteoclastogenesis. Intraperitoneal injection of Shh agonists into neonatal mice promoted tooth eruption at postnatal day (PN) 15, whereas treatment with the Shh inhibitor (LDE225) suppressed this process. When RAW264.7 osteoclast precursor cells were treated with RANKL, NFATc1 translocated from the cytoplasm to the nucleus and induced cell differentiation into TRAP+ osteoclasts; this process was activated by Shh but inhibited by LDE225. Treating RAW264.7 cells with the p38 inhibitor, BIRB796, also inhibited NFATc1 nuclear localization. p-p38 expression in the alveolar bone of PN3 and PN5 mice was decreased by treatment with LDE225, and RAW264.7 cell differentiation was reduced by BIRB796, regardless of treatment with Shh. Furthermore, Shh activated p38 signaling pathway in RAW264.7 cells, while p38 phosphorylation was reduced by LDE225, which ultimately inhibited osteoclast precursor differentiation. Therefore, we concluded that Shh promotes osteoclast precursor differentiation via the p38-NFATc1 signaling pathway.
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Affiliation(s)
- Jinan Liu
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China; Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jiran Wang
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China; Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Rui Huang
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China; Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xueting Jia
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China; Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiaofeng Huang
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China; Immunology Research Center for Oral and Systemic Health, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
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Modafferi C, Tabolacci E, Grippaudo C, Chiurazzi P. Syndromic and Non-Syndromic Primary Failure of Tooth Eruption: A Genetic Overview. Genes (Basel) 2025; 16:147. [PMID: 40004475 PMCID: PMC11855040 DOI: 10.3390/genes16020147] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2024] [Revised: 01/20/2025] [Accepted: 01/23/2025] [Indexed: 02/27/2025] Open
Abstract
Primary failure of tooth eruption (PFE) is a rare genetic disorder characterized by the failure of teeth to erupt in the absence of obvious physical obstructions, often resulting in a progressive open bite that is resistant to orthodontic treatment. While PFE can be caused by genetic or systemic factors (such as cysts, tumors, and endocrine imbalances), the non-syndromic causes are primarily genetic, with an autosomal dominant inheritance pattern with variable expressivity. Several genes have been closely associated with the non-syndromic PFE form. The PTH1R (parathyroid hormone 1 receptor) is the most commonly PFE-associated gene. Additional genes associated with minor frequency are Transmembrane protein 119 (TMEM119), which reduces the glycolytic efficiency of bone cells, limiting their mineralization capacity and causing bone fragility; Periostin (POSTN), which regulates the extracellular matrix and the bone's response to mechanical stress; and Lysine (K)-specific methyltransferase 2C (KMT2C), which establishes histone methylation near the Wnt Family Member 5A (WNT5A) gene involved in dental development (odontogenesis). Syndromic forms of PFE are typically associated with complex multisystem disorders, where dental eruption failure is one of the clinical features of the spectrum. These syndromes are often linked to genetic variants that affect ectodermal development, craniofacial patterning, and skeletal growth, leading to abnormal tooth development and eruption patterns. Notable syndromes include GAPO syndrome, ectodermal dysplasia, and cleidocranial dysplasia, each contributing to PFE through distinct molecular mechanisms, such as disruptions in dental structure development, cranial abnormalities, or systemic developmental delays. The main aim of this review is to provide a comprehensive overview of the genetic basis underlying both syndromic and non-syndromic forms of PFE to facilitate precision diagnosis, foster the development of personalized therapeutic strategies, and offer new insights into managing this complex dental anomaly.
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Affiliation(s)
- Clarissa Modafferi
- UOC Genetica Medica, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy; (C.M.); (P.C.)
| | - Elisabetta Tabolacci
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Medicina Genomica, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
- Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
| | - Cristina Grippaudo
- Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
- UOC Clininica Odontoiatrica, Dipartimento di Neuroscienze, Organi di Senso e Torace, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
- Odontoiatria e Protesi Dentaria, Dipartimento Testa Collo ed Organi di Senso, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Pietro Chiurazzi
- UOC Genetica Medica, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy; (C.M.); (P.C.)
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Medicina Genomica, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
- Fondazione Policlinico Universitario “A. Gemelli” IRCCS, 00168 Rome, Italy
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Fonseca BA, de Oliveira Fernandes T, de Moura DFS, Reis CLB, Küchler EC, Baratto-Filho F, Antunes LS, Antunes LAA. Single-Nucleotide Polymorphisms in MMP3, TIMP1, and MTR Genes are Associated With Delayed Deciduous Tooth Eruption. Biochem Genet 2025:10.1007/s10528-024-11016-9. [PMID: 39776370 DOI: 10.1007/s10528-024-11016-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2024] [Accepted: 12/27/2024] [Indexed: 01/11/2025]
Abstract
To analyze whether the single-nucleotide polymorphisms (SNPs) in Matrix metalloproteinases 2, 3, and 9 (MMP2, MMP3, and MMP9), Tissue Inhibitor of Metalloproteinases 1 and 2 (TIMP1 and TIMP2), methionine synthase (MTR) and methionine synthase reductase (MTRR) influence delayed deciduous tooth eruption (DDTE). This cross-sectional study included 1060 biologic unrelated children (aged between 6 and 36 months) of both sexes, selected from 25 public schools in Nova Friburgo, Rio de Janeiro, Brazil. Oral examination was conducted and DDTE was defined by the absence of gingival eruption according to a chronology based on the Brazilian population. Genotyping of selected SNPs (rs243847, rs52261, rs17576, rs4898, rs7501477, rs1805087, and rs1801394) was performed using TaqMan real-time PCR with genomic DNA extracted from buccal cells. The association between genotypes and DDTE was evaluated using univariate and multivariate analyses (p < 0.05). A total of 224 children and caregivers were included after the eligibility criteria. The heterozygous genotype for the SNPs MTR (rs11805087) was associated with DDTE in both the univariate (p = 0.004) and multivariate (p < 0.001) codominant models, as well as in the univariate (p = 0.010) and multivariate (p = 0.001) recessive models. TIMP1 (rs4898) and MMP3 (rs522616) were associated with DDTE only in the univariate model (p < 0.05). The SNPs in MTR (rs11805087), MMP3 (rs522616) and TIMP (rs4898) genes are associated with DDTE. The factors affecting the chronology of deciduous tooth eruption has been insufficiently studied. This article brings novel knowledge regarding the role of genetics polymorphisms on timing variation of deciduous tooth eruption. Understanding the factors that impact tooth eruption is crucial for the fields of pediatric dentistry and orthodontics.
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Affiliation(s)
- Barbara Alves Fonseca
- Posgraduate Program in Dentistry, Institute of Health Sciences, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | - Thaís de Oliveira Fernandes
- Posgraduate Program in Dentistry, Institute of Health Sciences, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | | | - Caio Luiz Bittencourt Reis
- Department of Orthodontics, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Erika Calvano Küchler
- Department of Orthodontics, Medical Faculty, University Hospital Bonn, Bonn, Germany
- School of Dentistry, Tuiuti University From Paraná, Curitiba, Paraná, Brazil
| | - Flares Baratto-Filho
- School of Dentistry, Tuiuti University From Paraná, Curitiba, Paraná, Brazil
- Department of Dentistry, Univille - University from the Joinville Region, Joinville, Santa Catarina, Brazil
| | - Leonardo Santos Antunes
- Posgraduate Program in Dentistry, Institute of Health Sciences, Fluminense Federal University, Nova Friburgo, RJ, Brazil
| | - Lívia Azeredo Alves Antunes
- Posgraduate Program in Dentistry, Institute of Health Sciences, Fluminense Federal University, Nova Friburgo, RJ, Brazil.
- Department of Dentistry, Univille - University from the Joinville Region, Joinville, Santa Catarina, Brazil.
- Department of Specific Formation, School of Dentistry, Fluminense Federal University, Fluminense Federal University, Centro - Nova Friburgo, St. Doutor Silvio Henrique Braune, Rio de Janeiro, 2228625-650, Brazil.
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Dipalma G, Inchingolo AD, Memè L, Casamassima L, Carone C, Malcangi G, Inchingolo F, Palermo A, Inchingolo AM. The Diagnosis and Management of Infraoccluded Deciduous Molars: A Systematic Review. CHILDREN (BASEL, SWITZERLAND) 2024; 11:1375. [PMID: 39594950 PMCID: PMC11592876 DOI: 10.3390/children11111375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2024] [Revised: 11/04/2024] [Accepted: 11/05/2024] [Indexed: 11/28/2024]
Abstract
The infraocclusion (IO) of primary molars, often seen in retained deciduous teeth, is a common condition that presents significant challenges for pediatric oral health. It occurs when primary molars are positioned below the occlusal plane due to the absence of permanent successors, leading to complications such as misaligned teeth, impaired chewing, and long-term dental health issues. OBJECTIVES This study examines IO prevalence, diagnosis, and treatment approaches. METHODS A systematic review following PRISMA guidelines was conducted, searching PubMed, Web of Science, and Scopus for articles from the last 15 years. Nine articles were included for qualitative analysis. RESULTS IO was associated with several complications, including root resorption, altered eruption of adjacent teeth, and space loss within the dental arch. Clinical and radiographic evaluations are key to early detection. Severe cases often require invasive treatments, such as tooth extraction and space maintenance, while mild cases could be monitored. CONCLUSIONS IO is prevalent in pediatric dentistry and can lead to significant dental issues if untreated. Early detection and intervention are crucial for preventing complications like tooth misalignment and impacted premolars. Tailored treatment strategies based on severity, along with increased awareness among dental practitioners, are essential to improve long-term outcomes for affected children.
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Affiliation(s)
- Gianna Dipalma
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
| | - Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
| | - Lucia Memè
- Department of Specialized Clinical Sciences and Dentistry, Polytechnic University of Marche, 60121 Ancona, Italy;
| | - Lucia Casamassima
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
| | - Claudio Carone
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
| | - Giuseppina Malcangi
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
| | - Andrea Palermo
- College of Medicine and Dentistry, Birmingham B4 6BN, UK;
| | - Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (G.D.); or (A.D.I.); or (L.C.); or (C.C.); or (F.I.); or (A.M.I.)
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Modafferi C, Tabolacci E, Lo Vecchio F, Cassano I, Bertozzi R, Fargnoli A, Cafiero C, Lo Cascio E, Arcovito A, Grippaudo C, Chiurazzi P. New Insight into the genotype-phenotype correlation of PTH1R variants and primary failure of tooth eruption on an Italian Cohort. Eur J Hum Genet 2024; 32:1402-1411. [PMID: 39327493 DOI: 10.1038/s41431-024-01691-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 08/01/2024] [Accepted: 09/05/2024] [Indexed: 09/28/2024] Open
Abstract
Primary failure of tooth eruption (PFE) is an autosomal dominant disease with penetrance defect. While the clinical phenotype is relatively well-defined since the 70 s of the last centuries, much more need to be clarified about the genetic causes of this condition. In our previous paper we established clinical criteria to better identify PFE patients carrying PTH1R gene variants. We examined a new cohort of 32 patients, including one or more relatives for 7 patients (43 cases in total), referred to have PFE and recruited from our Hospital and from external outpatients. Sequencing analysis of the PTH1R coding sequence in this cohort of patients revealed 9 different variants, 4 exonic and 5 intronic. Through in silico prediction tools and databases, 3 of them (2 exonic and 1 in a splicing site) had been considered potentially involved in the PFE phenotype. Sequencing of cDNA was unsuccessfully attempted due to the low levels of PTH1R expression in the analysed tissues. The yield of the genetic test increases when the clinical selection of the patients with dental eruption failure is well-characterized. Dental eruption failure with pure clinical findings of PFE associated with familial history revealed variants in PTH1R gene, offering a diagnostic test for the family. Characterization of novel variants in the most relevant responsible gene of the PFE could bring to a more accurate diagnosis and therapeutic approach in the future and to a deeper comprehension of the disease.
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Affiliation(s)
- Clarissa Modafferi
- UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Elisabetta Tabolacci
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Medicina Genomica, Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Filomena Lo Vecchio
- UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Ilaria Cassano
- UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Roberto Bertozzi
- UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Arcangelo Fargnoli
- UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
| | - Concetta Cafiero
- Medical Oncology, SG Moscati Hospital, Statte, Ta, Italy
- Anatomic Pathology Unit, Fabrizio Spaziani Hospital, Frosinone, Italy
| | - Ettore Lo Cascio
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Biochimica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Alessandro Arcovito
- Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
- Dipartimento di Scienze Biotecnologiche di Base, Cliniche Intensivologiche e Perioperatorie, Sezione di Biochimica, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Cristina Grippaudo
- UOC di Clinica Odontoiatrica, Dipartimento di Neuroscienze, Organi di senso e Torace, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy.
- Dipartimento Universitario Testa Collo ed Organi di Senso, Università Cattolica del Sacro Cuore, Rome, Italy.
| | - Pietro Chiurazzi
- UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
- Dipartimento di Scienze della Vita e Sanità Pubblica, Sezione di Medicina Genomica, Università Cattolica del Sacro Cuore, Rome, Italy
- Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Rome, Italy
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Chen DDS, Cheng JHC, Chen JLC, Huang HW. Orthodontic treatment for substitution of impacted mandibular second molars with their adjacent wisdom teeth. J Dent Sci 2024; 19:2377-2380. [PMID: 39347081 PMCID: PMC11437297 DOI: 10.1016/j.jds.2024.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 05/22/2024] [Indexed: 10/01/2024] Open
Abstract
A distinctive method for extraction of the bilateral impacted mandibular second molars (MM2s) and moving the bilateral mesioangularly impacted mandibular third molars (MM3s) to the MM2 positions with appropriate occlusion by orthodontic uprighting and protraction was demonstrated in a 24-year-old woman and a 20-year-old woman, respectively. Although the surgical procedures should be performed under general anesthesia, rapid orthodontic treatment after tooth extraction aided in the initial teeth movement of the bilateral MM3s. The proposed treatment could be implemented and completed in 2 years or less. After undergoing the orthodontic treatment, the patient achieved robust bone support no matter with or without bone grafting. With this less technique-sensitive method, the patient still achieved improved posterior occlusion and masticatory function. Oral and maxillofacial surgeons should be consulted before this treatment option was adopted.
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Affiliation(s)
- Daniel De-Shing Chen
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Orthodontic Division, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
| | - Johnson Hsin-Chung Cheng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan
- Orthodontic Division, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
| | - Jamie Liang-Chieh Chen
- Orthodontic Division, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
| | - Han-Wei Huang
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan
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9
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Chen J, Ying Y, Li H, Sha Z, Lin J, Wu Y, Wu Y, Zhang Y, Chen X, Zhang W. Abnormal dental follicle cells: A crucial determinant in tooth eruption disorders (Review). Mol Med Rep 2024; 30:168. [PMID: 39027997 DOI: 10.3892/mmr.2024.13292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 06/20/2024] [Indexed: 07/20/2024] Open
Abstract
The dental follicle (DF) plays an indispensable role in tooth eruption by regulating bone remodeling through their influence on osteoblast and osteoclast activity. The process of tooth eruption involves a series of intricate regulatory mechanisms and signaling pathways. Disruption of the parathyroid hormone‑related protein (PTHrP) in the PTHrP‑PTHrP receptor signaling pathway inhibits osteoclast differentiation by DF cells (DFCs), thus resulting in obstructed tooth eruption. Furthermore, parathyroid hormone receptor‑1 mutations are linked to primary tooth eruption failure. Additionally, the Wnt/β‑catenin, TGF‑β, bone morphogenetic protein and Hedgehog signaling pathways have crucial roles in DFC involvement in tooth eruption. DFC signal loss or alteration inhibits osteoclast differentiation, affects osteoblast and cementoblast differentiation, and suppresses DFC proliferation, thus resulting in failed tooth eruptions. Abnormal tooth eruption is also associated with a range of systemic syndromes and genetic diseases, predominantly resulting from pathogenic gene mutations. Among these conditions, the following disorders arise due to genetic mutations that disrupt DFCs and impede proper tooth eruption: Cleidocranial dysplasia associated with Runt‑related gene 2 gene mutations; osteosclerosis caused by CLCN7 gene mutations; mucopolysaccharidosis type VI resulting from arylsulfatase B gene mutations; enamel renal syndrome due to FAM20A gene mutations; and dentin dysplasia caused by mutations in the VPS4B gene. In addition, regional odontodysplasia and multiple calcific hyperplastic DFs are involved in tooth eruption failure; however, they are not related to gene mutations. The specific mechanism for this effect requires further investigation. To the best of our knowledge, previous reviews have not comprehensively summarized the syndromes associated with DF abnormalities manifesting as abnormal tooth eruption. Therefore, the present review aims to consolidate the current knowledge on DFC signaling pathways implicated in abnormal tooth eruption, and their association with disorders of tooth eruption in genetic diseases and syndromes, thereby providing a valuable reference for future related research.
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Affiliation(s)
- Jiahao Chen
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Ying Ying
- Department of Child Health, Yongkang Women and Children's Health Hospital, Yongkang, Zhejiang 321300, P.R. China
| | - Huimin Li
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Zhuomin Sha
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Jiaqi Lin
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Yongjia Wu
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Yange Wu
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Yun Zhang
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Xuepeng Chen
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
| | - Weifang Zhang
- Clinical Research Center for Oral Diseases of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310006, P.R. China
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10
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Nemec M, Garzarolli-Thurnlackh G, Lettner S, Nemec-Neuner H, Gahleitner A, Stavropoulos A, Bertl K, Jonke E. Prevalence and characteristics of and risk factors for impacted teeth with ankylosis and replacement resorption - a retrospective, 3D-radiographic assessment. Prog Orthod 2024; 25:34. [PMID: 39155302 PMCID: PMC11330951 DOI: 10.1186/s40510-024-00531-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 06/22/2024] [Indexed: 08/20/2024] Open
Abstract
BACKGROUND Large variation in the prevalence of ankylosis and replacement resorption (ARR) is reported in the literature and most studies have relatively small patient numbers. The present retrospective study aimed to provide an overview on prevalence, location of, and associated risk factors with ARR based on a large sample of computed tomography (CT) / cone beam computed tomography (CBCT) scans of impacted teeth. The results should allow clinicians to better estimate the risk of ARR at impacted teeth. METHODS The CT/CBCT scans of 5764 patients of a single center in Central Europe were screened with predefined eligibility criteria. The following parameters were recorded for the finally included population: gender, age, tooth type/position, number of impacted teeth per patient, and presence/absence of ARR. For teeth with ARR the tooth location in reference to the dental arch, tooth angulation, and part of the tooth affected by ARR were additionally registered. RESULTS Altogether, 4142 patients with 7170 impacted teeth were included. ARR was diagnosed at 187 impacted teeth (2.6%) of 157 patients (3.7%); 58% of these patients were female and the number of teeth with ARR per patient ranged from 1 to 10. Depending on the tooth type the prevalence ranged from 0 (upper first premolars, lower central and lateral incisors) to 41.2% (upper first molars). ARR was detected at the crown (57.2%), root (32.1%), or at both (10.7%). After correcting for confounders, the odds for ARR significantly increased with higher age; further, incisors and first/second molars had the highest odds for ARR, while wisdom teeth had the lowest. More specifically, for 20-year-old patients the risk for ARR at impacted incisors and first/second molars ranged from 7.7 to 10.8%, but it approximately tripled to 27.3-35.5% for 40-year-old patients. In addition, female patients had significantly less often ARR at the root, while with increasing age the root was significantly more often affected by ARR than the crown. CONCLUSION ARR at impacted teeth is indeed a rare event, i.e., only 2.6% of 7170 impacted teeth were ankylosed with signs of replacement resorption. On the patient level, higher age significantly increased the odds for ARR and on the tooth level, incisors and first/second molars had the highest odds for ARR, while wisdom teeth had the lowest.
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Affiliation(s)
- Michael Nemec
- Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria
| | - Giacomo Garzarolli-Thurnlackh
- Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria
| | - Stefan Lettner
- Core Facility Hard Tissue and Biomaterials Research, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria
| | - Hemma Nemec-Neuner
- Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria
| | - André Gahleitner
- Department of Diagnostic Radiology, Division of Osteoradiology, General Hospital, Medical University of Vienna, Spitalgasse 23, Vienna, 1090, Austria
| | - Andreas Stavropoulos
- Department of Periodontology, Faculty of Odontology, University of Malmö, Carl Gustafs väg 34, Malmö, 205 06, Sweden
- Division of Conservative Dentistry and Periodontology, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria
- Department of Periodontology, Blekinge Hospital, Byggnad 13, Hälsovägen, Karlskrona, 371 41, Sweden
- Department of Periodontology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, 3010, Bern, Switzerland
| | - Kristina Bertl
- Department of Periodontology, Dental Clinic, Faculty of Medicine, Sigmund Freud University Vienna, Freudplatz 3, Vienna, 1020, Austria.
- Department of Periodontology, Blekinge Hospital, Byggnad 13, Hälsovägen, Karlskrona, 371 41, Sweden.
- Division of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria.
| | - Erwin Jonke
- Division of Orthodontics, University Clinic of Dentistry, Medical University of Vienna, Sensengasse 2a, Vienna, 1090, Austria
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11
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Ferlias N, Gjørup H, Doherty MA, Pedersen TK. Pycnodysostosis: Characteristics of teeth, mouth and jaws. Orthod Craniofac Res 2024; 27:656-664. [PMID: 38532649 DOI: 10.1111/ocr.12782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2024] [Indexed: 03/28/2024]
Abstract
OBJECTIVES To describe the clinical and radiographic oro-dental characteristics of patients with pycnodysostosis (PDO). MATERIALS & METHODS A short interview and clinical examination of seven patients with PDO were performed as well as assessment of the temporomandibular joints and masticatory muscles using the diagnostic criteria for temporomandibular disorders, DC-TMD form. A full set of records were taken including photos and intraoral scan. Finally, existing cone beam computed tomography (CBCT) images and radiographs were also studied. RESULTS All patients presented with bimaxillary micrognathia, five had a convex profile, and two had a straight profile. In addition, posterior open bite, Angle Class III molar relation with accompanying anterior crossbite and a grooved median palate were common findings. No patient showed symptoms of temporomandibular disorder (TMD) apart from some clicking. Finally, the main radiographic findings were the obtuse mandibular angle, the frontal bossing, the elongation of the coronoid/condylar process and the presence of hypercementosis with obliterated pulp chambers. CONCLUSION The examined patients with PDO were characterized by dental crowding, malocclusion (anterior crossbite, posterior open bite), hypercementosis, obliterated pulp chambers and deviations in mandibular morphology. In conclusion, patients with PDO have a specific need for dental and orthodontic monitoring with focus on crowding and posterior open bite. The patients will benefit from a long-term orthodontic plan including extractions.
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Affiliation(s)
- Nikolaos Ferlias
- Department of Dentistry and Oral Health, Section of Orthodontics, Aarhus University, Aarhus, Denmark
| | - Hans Gjørup
- Department of Oral and Maxillofacial Surgery, Center for Oral Health in Rare Diseases, Aarhus University Hospital, Aarhus, Denmark
| | - Mia Aagaard Doherty
- Childhood Cancer Research Group, Danish Cancer Research Institute, Copenhagen, Denmark
- Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Thomas Klit Pedersen
- Department of Dentistry and Oral Health, Section of Orthodontics, Aarhus University, Aarhus, Denmark
- Department of Oral and Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark
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12
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Li XX, Wang MT, Wu ZF, Sun Q, Ono N, Nagata M, Zang XL, Ono W. Etiological Mechanisms and Genetic/Biological Modulation Related to PTH1R in Primary Failure of Tooth Eruption. Calcif Tissue Int 2024; 115:101-116. [PMID: 38833001 DOI: 10.1007/s00223-024-01227-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 05/07/2024] [Indexed: 06/06/2024]
Abstract
Primary failure of eruption (PFE) is a rare disorder that is characterized by the inability of a molar tooth/teeth to erupt to the occlusal plane or to normally react to orthodontic force. This condition is related to hereditary factors and has been extensively researched over many years. However, the etiological mechanisms of pathogenesis are still not fully understood. Evidence from studies on PFE cases has shown that PFE patients may carry parathyroid hormone 1 receptor (PTH1R) gene mutations, and genetic detection can be used to diagnose PFE at an early stage. PTH1R variants can lead to altered protein structure, impaired protein function, and abnormal biological activities of the cells, which may ultimately impact the behavior of teeth, as observed in PFE. Dental follicle cells play a critical role in tooth eruption and root development and are regulated by parathyroid hormone-related peptide (PTHrP)-PTH1R signaling in their differentiation and other activities. PTHrP-PTH1R signaling also regulates the activity of osteoblasts, osteoclasts and odontoclasts during tooth development and eruption. When interference occurs in the PTHrP-PTH1R signaling pathway, the normal function of dental follicles and bone remodeling are impaired. This review provides an overview of PTH1R variants and their correlation with PFE, and highlights that a disruption of PTHrP-PTH1R signaling impairs the normal process of tooth development and eruption, thus providing insight into the underlying mechanisms related to PTH1R and its role in driving PFE.
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Affiliation(s)
- Xiao-Xia Li
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| | - Man-Ting Wang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| | - Zhi-Fang Wu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| | - Qiang Sun
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China
| | - Noriaki Ono
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, 77054, USA
| | - Mizuki Nagata
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, 77054, USA
| | - Xiao-Long Zang
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, 310000, China.
| | - Wanida Ono
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, 77054, USA.
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13
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Stonehouse-Smith D, Ota L, Seehra J, Kwok J, Liu C, Seppala M, Cobourne MT. How do teeth erupt? Br Dent J 2024; 237:217-221. [PMID: 39123030 PMCID: PMC11315668 DOI: 10.1038/s41415-024-7609-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 01/15/2024] [Accepted: 01/22/2024] [Indexed: 08/12/2024]
Abstract
The development of normal occlusion requires eruptive migration of teeth from their developmental position in the jaw into a functional position within the oral cavity. This process involves significant and coordinated movement in an axial direction and appropriate eruption through the gingival tissues. The mechanisms regulating these developmental events are poorly understood, and teeth retain eruptive potential throughout their lifespan. In recent years, the use of mouse models has helped to elucidate some of the underlying molecular and biological mechanisms of mammalian tooth eruption. Here, we outline our current understanding of tooth eruption mechanisms and discuss their relevance in terms of known human disorders of tooth eruption.
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Affiliation(s)
- Daniel Stonehouse-Smith
- Centre for Craniofacial & Regenerative Biology, Department of Orthodontics, Faculty of Dental, Oral & Craniofacial Sciences, King´s College London, London, UK
| | - Laura Ota
- Dental Core Trainee, Guy´s and St Thomas´ NHS Foundation Trust, UK
| | - Jadbinder Seehra
- Centre for Craniofacial & Regenerative Biology, Department of Orthodontics, Faculty of Dental, Oral & Craniofacial Sciences, King´s College London, London, UK
| | - Jerry Kwok
- Department of Oral Surgery, Guy´s and St Thomas´ NHS Foundation Trust, UK
| | - Catherine Liu
- Centre for Craniofacial & Regenerative Biology, Department of Orthodontics, Faculty of Dental, Oral & Craniofacial Sciences, King´s College London, London, UK
| | - Maisa Seppala
- Centre for Craniofacial & Regenerative Biology, Department of Orthodontics, Faculty of Dental, Oral & Craniofacial Sciences, King´s College London, London, UK
| | - Martyn T Cobourne
- Centre for Craniofacial & Regenerative Biology, Department of Orthodontics, Faculty of Dental, Oral & Craniofacial Sciences, King´s College London, London, UK.
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14
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Papadopoulou CI, Sifakakis I, Tournis S. Metabolic Bone Diseases Affecting Tooth Eruption: A Narrative Review. CHILDREN (BASEL, SWITZERLAND) 2024; 11:748. [PMID: 38929327 PMCID: PMC11202066 DOI: 10.3390/children11060748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 06/12/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024]
Abstract
Tooth eruption is an essential process for the development of the oral and maxillofacial system. Several inherited and acquired diseases might affect this tightly regulated process, resulting in premature, delayed, or even failed tooth eruption. The purpose of this article is to review the literature and the clinical parameters of metabolic bone diseases that affect tooth eruption. It examines the physiological aspects of tooth eruption and the pathophysiological changes induced by metabolic bone diseases, including changes in bone metabolism, density, and structure. The search strategy for this review included an electronic search in PubMed, Google Scholar, Medline, Scopus, and the Cochrane Library using the following keywords: "metabolic bone diseases", "tooth eruption", "delayed tooth eruption", and each reported disease in combination with "tooth eruption disorders", covering publications up to March 2024 and limited to English-language sources. Understanding the influence of metabolic bone diseases on tooth eruption is crucial for managing both dental and skeletal manifestations associated with these disorders. This review suggests that a multidisciplinary approach to treatment may significantly improve oral outcomes for patients suffering from such conditions. Clinicians should be aware of the specific dental abnormalities that may arise and consider comprehensive evaluations and individualized treatment plans. These findings underscore the need for further research into targeted therapies that address these abnormalities.
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Affiliation(s)
| | - Iosif Sifakakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Symeon Tournis
- Laboratory for the Research of Musculoskeletal System “Th. Garofalidis”, School of Medicine, National and Kapodistrian University of Athens, 14561 Athens, Greece;
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15
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Thuaire A, Delebarre H, Marsili L, Colson C, Vanlerberghe C, Lauwers L, Raoul G, Touzet-Roumazeille S, Ferri J. Primary Failure of Dental Eruption Due to Variants Parathyroid Hormone Receptor 1: Retrospective Study and Proposal of Guidelines Treatment. J Craniofac Surg 2024; 35:e209-e213. [PMID: 38299863 DOI: 10.1097/scs.0000000000009963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 12/09/2023] [Indexed: 02/02/2024] Open
Abstract
OBJECTIVE Primary failure of eruption is characterized by a nonsyndromic defect in tooth eruption in the absence of mechanical obstruction. It is correlated to rare heterozygous variants in the parathyroid hormone receptor 1 gene. The management of primary failure of eruption is complex because many therapies are ineffective. The present study aimed to compare the clinical outcomes of our patients with the findings reported in the literature, and to propose a treatment guideline based on the literature and our experience. METHODS Retrospective study of patients affected by primary dental eruption failure in the department and analyse of the results and compare with those of the litterature. RESULTS Twelve patients belonging to 5 families (9 males, 3 females; 13-52 y old) diagnosed and treated in the maxillofacial surgery and stomatology department of the Lille University Hospital were included. All patients showed posterior tooth involvement, and most patients showed bilateral defects. None of the affected teeth had coronal alveolar bone, whereas 6 patients showed root resorption in the affected teeth. Genetic analyses, performed on 11 patients, identified a parathyroid hormone receptor 1 disease-causing variant in 7 of them (63%). Multidisciplinary treatment was required to rehabilitate these patients. Orthodontic interventions, even at an early age, are difficult in affected teeth, which are often blocked or have internal resorption. Moreover, retention of these affected teeth during growth leads to dentoskeletal malocclusions, requiring difficult surgical management in the long term. Therefore, early extraction of these teeth is frequently recommended once the diagnosis has been confirmed. An implant-borne prosthetic rehabilitation can then be achieved at the end of growth after correction of the jaw discrepancy. In case of a late diagnosis, other surgical or noninvasive techniques may be used depending on the clinical situation. Distraction osteogenesis or segmental osteotomy could be discussed for patients with mild phenotypes. CONCLUSIONS Early diagnosis of primary eruption defects is crucial to offer appropriate management as early as possible, and so to avoid late complicated treatments.
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Affiliation(s)
- Antoine Thuaire
- Department of Oral and Maxillo-Facial Surgery, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille
| | - Hélène Delebarre
- Department of Oral and Maxillo-Facial Surgery, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille
| | - Luisa Marsili
- Department of Clinical Genetics, Université de Lille, CHU Lille, Clinique de Génétique Guy Fontaine, Lille, France
- Department of Clinical Genetics, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Cindy Colson
- Department of Clinical Genetics, Service de Génétique Médicale CHRU de Lille
| | - Clemence Vanlerberghe
- Department of Oral and Maxillo-Facial Surgery, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille
| | - Ludovic Lauwers
- Department of Oral and Maxillo-Facial Surgery, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille
| | - Gwenael Raoul
- Department of Clinical Genetics, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille, Lille, France
| | - Sandrine Touzet-Roumazeille
- Department of Oral and Maxillo-Facial Surgery, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille
| | - Joël Ferri
- Department of Clinical Genetics, Service de Stomatologie et de Chirurgie Maxillo-Faciale CHRU de Lille, Lille, France
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16
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Xu M, Wang D, Li K, Ma T, Wang Y, Xia B. TMEM119 (c.G143A, p.S48L) Mutation Is Involved in Primary Failure of Eruption by Attenuating Glycolysis-Mediated Osteogenesis. Int J Mol Sci 2024; 25:2821. [PMID: 38474068 DOI: 10.3390/ijms25052821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
Primary failure of eruption (PFE) is a rare oral disease with an incidence rate of 0.06%. It is characterized by abnormal eruption mechanisms that disrupt tooth eruption. The underlying pathogenic genetic variant and mechanism of PFE remain largely unknown. The purpose of this study was to explore the role of a novel transmembrane protein 119 (TMEM119) mutation in two PFE patients in a Chinese family. Information collection was performed on the family with a diagnosis of PFE, and blood samples from patients and healthy family members were extracted. Whole-exome sequencing was performed. Bioinformatics analysis revealed that a heterozygous variant in the TMEM119 gene (c.G143A, p.S48L) was a disease-associated mutation in this family. Recombinant pcDNA3.1 plasmid-containing wild-type and mutant TMEM119 expression cassettes were successfully constructed and transfected into MC3T3-E1 cells, respectively. The results of in vitro analysis suggested that the subcellular distribution of the TMEM119 protein was transferred from the cell cytoplasm to the nucleus, and the ability of cells to proliferate and migrate as well as glycolytic and mineralized capacities were reduced after mutation. Furthermore, rescue assays showed that activating transcription factor 4 (ATF4) overexpression rescued the attenuated glycolysis and mineralization ability of cells. Results of in vivo analysis demonstrated that TMEM119 was mainly expressed in the alveolar bone around the mouse molar germs, and the expression level increased with tooth eruption, demonstrated using immunohistochemistry and immunofluorescence. Collectively, the novel TMEM119 mutation is potentially pathogenic in the PFE family by affecting the glucose metabolism and mineralized function of osteoblasts, including interaction with ATF4. Our findings broaden the gene mutation spectrum of PFE and further elucidate the pathogenic mechanism of PFE.
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Affiliation(s)
- Mindi Xu
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
- National Clinical Research Center for Oral Diseases, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
| | - Dandan Wang
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
| | - Kefan Li
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
| | - Tianyu Ma
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
| | - Yixiang Wang
- Central Laboratory, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
| | - Bin Xia
- Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology, Haidian District, Beijing 100081, China
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17
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Vinereanu A, Munteanu A, Clauss F, Gorduza EV. Rare Case of First Permanent Molar Primary Failure of Eruption with Agenesis of Premolars. CHILDREN (BASEL, SWITZERLAND) 2024; 11:152. [PMID: 38397264 PMCID: PMC10887694 DOI: 10.3390/children11020152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/20/2024] [Accepted: 01/23/2024] [Indexed: 02/25/2024]
Abstract
Primary failure of eruption (PFE) is a rare non-syndromic condition involving total or partial non-eruption of posterior teeth in the absence of mechanical obstruction. This paper presents the case of a healthy girl referred at age 4 for asymmetry of the upper arch. Clinical examination confirmed a slight shift of the upper midline to the left, with no erupted teeth distal to the upper left canine and a left posterior open bite. Panoramic X-rays showed delayed intraosseous development of the lateral left upper teeth compared to the right side. Clinic and radiographic follow-up during the next 9 years showed that 26 had not erupted by almost 13 years of age, 27 had delayed development and an unusual shape, and there was an agenesis in 24 and 25. Genetic analysis using the PTH1R single-gene sequencing method did not detect any known disease-causing or rare pathogenic variants that could explain the patient's phenotype. Even when detected early, PFE raises difficult problems with regard to diagnosis and ortho-surgical treatment planning due to the impossibility of accurately predicting its evolution. Tooth agenesis on the same arch worsens the prognosis and adds challenges to planning the treatment. Close long-term follow-up and timely adjustment of the treatment plan in accordance with the evolution of the case are needed.
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Affiliation(s)
- Arina Vinereanu
- Faculty of Dentistry, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Aneta Munteanu
- Faculty of Dentistry, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Francois Clauss
- Faculty of Dental Surgery, University of Strasbourg, 67081 Strasbourg, France;
| | - Eusebiu Vlad Gorduza
- Faculty of Medicine, Grigore. T. Popa University of Medicine and Pharmacy Iași, 700115 Iași, Romania;
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Inchingolo F, Ferrara I, Viapiano F, Ciocia AM, Palumbo I, Guglielmo M, Inchingolo AD, Palermo A, Bordea IR, Inchingolo AM, Di Venere D, Dipalma G. Primary Failure Eruption: Genetic Investigation, Diagnosis and Treatment: A Systematic Review. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1781. [PMID: 38002872 PMCID: PMC10670730 DOI: 10.3390/children10111781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/21/2023] [Accepted: 10/29/2023] [Indexed: 11/26/2023]
Abstract
AIM The aim of this systematic review is to explore the pathology, diagnosis, treatment, and genetic basis of Primary Failure of Eruption (PFE) in the field of pediatric dentistry and orthodontics. METHODS The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were followed for this review. The databases PubMed, Science Direct, Scopus, and Web of Science were searched from 1 July 2013 to 1 July 2023, using keywords "primary failure of tooth eruption" OR "primary failure of eruption" OR "tooth eruption failure" OR "PFE" AND "orthodontics". The study selection process involved screening articles based on the inclusion and exclusion criteria. RESULTS A total of 1151 results were obtained from the database search, with 14 papers meeting the inclusion criteria. The review covers various aspects of PFE, including its clinical features, diagnosis, treatment options, and genetic associations with mutations in the PTH1R gene. Differentiation between PFE and Mechanical Failure of Eruption (MFE) is crucial for accurate treatment planning. Orthodontic and surgical interventions, along with multidisciplinary approaches, have been employed to manage PFE cases. Genetic testing for PTH1R mutations plays a significant role in confirming the diagnosis and guiding treatment decisions, although some cases may not be linked to this mutation. CONCLUSIONS This systematic review provides valuable insights into the diagnosis, treatment, and genetic basis of PFE. Early diagnosis and personalized treatment planning are crucial for successful management. Genetic testing for PTH1R mutations aids in accurate diagnosis and may influence treatment decisions. However, further research is needed to explore the complex genetic basis of PFE fully and improve treatment outcomes for affected individuals.
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Affiliation(s)
- Francesco Inchingolo
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Irene Ferrara
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Fabio Viapiano
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Anna Maria Ciocia
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Irene Palumbo
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Mariafrancesca Guglielmo
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Alessio Danilo Inchingolo
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Andrea Palermo
- College of Medicine and Dentistry, Birmingham B4 6BN, UK;
| | - Ioana Roxana Bordea
- Department of Oral Health, Iuliu Hatieganu University of Medicine and Pharmacy, 15 V. Babes Street, 400012 Cluj-Napoca, Romania;
| | - Angelo Michele Inchingolo
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Daniela Di Venere
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
| | - Gianna Dipalma
- Department of Interdisciplinary Medicine, School of Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy; (I.F.); (F.V.); (A.M.C.); (I.P.); (M.G.); (A.D.I.); (A.M.I.); (D.D.V.); (G.D.)
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19
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Vilardaga JP, Clark LJ, White AD, Sutkeviciute I, Lee JY, Bahar I. Molecular Mechanisms of PTH/PTHrP Class B GPCR Signaling and Pharmacological Implications. Endocr Rev 2023; 44:474-491. [PMID: 36503956 PMCID: PMC10461325 DOI: 10.1210/endrev/bnac032] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 11/14/2022] [Accepted: 12/05/2022] [Indexed: 12/14/2022]
Abstract
The classical paradigm of G protein-coupled receptor (GPCR) signaling via G proteins is grounded in a view that downstream responses are relatively transient and confined to the cell surface, but this notion has been revised in recent years following the identification of several receptors that engage in sustained signaling responses from subcellular compartments following internalization of the ligand-receptor complex. This phenomenon was initially discovered for the parathyroid hormone (PTH) type 1 receptor (PTH1R), a vital GPCR for maintaining normal calcium and phosphate levels in the body with the paradoxical ability to build or break down bone in response to PTH binding. The diverse biological processes regulated by this receptor are thought to depend on its capacity to mediate diverse modes of cyclic adenosine monophosphate (cAMP) signaling. These include transient signaling at the plasma membrane and sustained signaling from internalized PTH1R within early endosomes mediated by PTH. Here we discuss recent structural, cell signaling, and in vivo studies that unveil potential pharmacological outputs of the spatial versus temporal dimension of PTH1R signaling via cAMP. Notably, the combination of molecular dynamics simulations and elastic network model-based methods revealed how precise modulation of PTH signaling responses is achieved through structure-encoded allosteric coupling within the receptor and between the peptide hormone binding site and the G protein coupling interface. The implications of recent findings are now being explored for addressing key questions on how location bias in receptor signaling contributes to pharmacological functions, and how to drug a difficult target such as the PTH1R toward discovering nonpeptidic small molecule candidates for the treatment of metabolic bone and mineral diseases.
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Affiliation(s)
- Jean-Pierre Vilardaga
- Laboratory for GPCR Biology, Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Lisa J Clark
- Laboratory for GPCR Biology, Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Alex D White
- Laboratory for GPCR Biology, Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Ieva Sutkeviciute
- Laboratory for GPCR Biology, Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Ji Young Lee
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Ivet Bahar
- Department of Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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20
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Korshunov AS, Vagner VD, Kuryatnikov KN, Serov DO, Torohov AL, Shykhalieva DD, Sarf EA, Bel'skaya LV. Infrared Spectroscopy to Analyze Sexual Dimorphism of Hard Dental Tissue Maturation at Eruption in Patients with Connective Tissue Dysplasia. APPLIED SPECTROSCOPY 2023; 77:457-469. [PMID: 36765457 DOI: 10.1177/00037028231160145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The aim of this study was to research the biochemical changes in the hard tissues of the lower "wisdom" teeth, which are at the stage of eruption, with connective tissue dysplasia, depending on sex. The study involved 38 patients aged 17-25 years, who had the extraction of the lower third molars on the left and right for medical reasons. Twenty-one participants in the experiment (16 females, five males) were diagnosed with connective tissue dysplasia; the remaining 17 were healthy and made up the control group (11 females, six males). Samples of enamel, dentin, and enamel-dentin junction were dried to constant weight and examined in tablets pressed in a mixture with potassium bromide on an FT-801 Fourier transform infrared (FT-IR) spectrometer (NPF Simex, Russia) in the range of 500-4000 cm-1. In the IR spectra of the enamel, enamel-dentin junction, and dentin, the absorbance ratio of amide I and II changed significantly and the absorbance of the absorption band of phosphate ions decreased from enamel to dentin. Differences between groups with and without connective tissue dysplasia increased in the following series: dentin, enamel-dentin junction, and enamel. With connective tissue dysplasia, a change in the ratio of the intensities of the absorption bands of amide I and phosphate ions was observed. Normally, the content of organic substances in the enamel of the teeth in the males group is lower than in the females group. Against the background of connective tissue dysplasia, the content of organic substances in the enamel in women decreased while in men it increased, which confirmed the presence of sexual dimorphism during the maturation of hard dental tissues at the eruption stage. The study confirms the opinion of many researchers about the significant role of collagen proteins, which, together with non-collagen proteins, are involved in the development and maturation of dental hard tissues, which are characterized by pronounced heterogeneity and sexual dimorphism in the group with connective tissue dysplasia.
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Affiliation(s)
- Andrey S Korshunov
- Department of Dentistry, Omsk State Medical University, Omsk, Russian Federation
| | - Vladimir D Vagner
- Department of the Organization of the Dental Service, Licensing and Accreditation, Central Research Institute of Dentistry and Maxillofacial Surgery, Moscow, Russian Federation
| | - Kirill N Kuryatnikov
- Department of Dentistry, Omsk State Medical University, Omsk, Russian Federation
| | - Dmitriy O Serov
- Department of Dentistry, Omsk State Medical University, Omsk, Russian Federation
| | - Andrey L Torohov
- Department of Dentistry, Omsk State Medical University, Omsk, Russian Federation
| | | | - Elena A Sarf
- Biochemistry Research Laboratory, Omsk State Pedagogical University, Omsk, Russian Federation
| | - Lyudmila V Bel'skaya
- Biochemistry Research Laboratory, Omsk State Pedagogical University, Omsk, Russian Federation
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21
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Bardideh E, Tamizi G, Shafaee H, Rangrazi A, Ghorbani M, Kerayechian N. The Effects of Intrusion of Anterior Teeth by Skeletal Anchorage in Deep Bite Patients; A Systematic Review and Meta-Analysis. Biomimetics (Basel) 2023; 8:101. [PMID: 36975331 PMCID: PMC10046359 DOI: 10.3390/biomimetics8010101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/11/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND Deep bite is known as one of the most common malocclusions, and its treatment and retention are often challenging. The use of mini-screws has been suggested as an ideal method for the intrusion of incisors in deep-bite patients. Still, there are conflicting reports regarding the superiority of this method compared to other common treatments. AIM The aim of this systematic review and meta-analysis was to evaluate the effects of the intrusion of anterior teeth by skeletal anchorage in deep bite patients. METHODS From the beginning to 15 September 2022, articles on the topic of interest were searched in electronic databases including PubMed, Web of Science, Scopus, EMBASE, and Cochrane's CENTRAL. Additionally, a hand search for pertinent studies and a search of the grey literature were carried out. After the selection of eligible studies, data extraction was performed using piloted forms. Inverse-variance random-effects meta-analyses were used to combine the outcome measures of dental indices, skeletal cephalometric indices, and dental cephalometric indices. RESULTS A total of 15 studies (6 RCT; 9 CCT) were included in the systematic review and 14 were used in the meta-analyses. The differences in overbite changes (MD = -0.45, p = 0.04), true incisor intrusion [u1-pp] (MD = -0.62, p = 0.003) and molar extrusion [u6-pp] (MD = -0.40, p = 0.01) were statistically significant and TADs showed better treatment results than other intrusion methods (segmented intrusion arch, utility arch, J hook headgear). No significant differences regarding overjet, molar and incisor tipping, and skeletal indices between mini-screw and other intrusion methods could be found. CONCLUSION The use of mini-screws leads to lower overbite and higher true intrusion (about 0.45 and 0.62 mm, respectively) compared to the use of other methods for intruding upper incisors. Furthermore, the effect of TAD on extrusion of molar teeth is less (by 0.4 mm) than other methods.
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Affiliation(s)
- Erfan Bardideh
- Dental Research Center, Mashhad University of Medical Sciences, Mashhad 9177948959, Iran
| | - Golnaz Tamizi
- School of Dentistry, Mashhad University of Medical Sciences, Mashhad 9177948959, Iran
| | - Hooman Shafaee
- Dental Materials Research Center, Mashhad University of Medical Sciences, Mashhad 9177948959, Iran
- Department of Orthodontics, School of Dentistry, Mashhad University of Medical Sciences, Mashhad 9177948959, Iran
| | - Abdolrasoul Rangrazi
- Dental Research Center, Mashhad University of Medical Sciences, Mashhad 9177948959, Iran
| | - Mahsa Ghorbani
- School of Dentistry, Mashhad University of Medical Sciences, Mashhad 9177948959, Iran
| | - Navid Kerayechian
- Department of Biomaterials and Biomimetics, New York University, New York, NY 10011, USA
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22
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Wagner D, Rey T, Maniere MC, Dubourg S, Bloch-Zupan A, Strub M. Primary failure of eruption: From molecular diagnosis to therapeutic management. J Oral Biol Craniofac Res 2023; 13:169-176. [PMID: 36654816 PMCID: PMC9841033 DOI: 10.1016/j.jobcr.2023.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/09/2023] Open
Abstract
Introduction Primary Failure of Eruption (PFE) is a rare condition affecting posterior teeth eruption resulting in a posterior open bite malocclusion. Differential diagnosis like ankylosis or mechanical eruption failure should be considered. For non-syndromic forms, mutations in PTH1R, and recently in KMT2C genes are the known etiologies. The aim of this work was to describe the variability of clinical presentations of PFE associated with pathogenic variants of PTHR1. Material and methods Diagnosis of non-syndromic PFE has been suggested for three members of a single family. Clinical and radiological features were collected, and genetic analyses were performed. Results The clinical phenotype (type and number of involved teeth, depth of bone inclusions, functional consequences) is variable within the family. Severe tooth resorptions were detected. A heterozygous substitution in PTH1R (NM_000316.3): c.899T > C was identified as a class 4 likely pathogenic variant. The multidisciplinary management is described involving oral biology, pediatric dentistry, orthodontics, oral surgery, and prosthodontics. Conclusion In this study, we report a new PTH1R variant involved in a familial form of PFE with variable expressivity. Therapeutic care is complex and difficult to systematize, hence the lack of evidence-based recommendations and clinical guidelines.
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Affiliation(s)
- Delphine Wagner
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Ste Elisabeth, 67000, Strasbourg, France
- Hôpitaux Universitaires de Strasbourg (HUS), Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Strasbourg, France
- UMR 7357, ICube laboratory, Boulevard Sébastien Brant 300, 67412, Illkirch, France
| | - Tristan Rey
- Université de Strasbourg, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U1258, CNRS- UMR7104, Illkirch, France
- Hôpitaux Universitaires de Strasbourg, Laboratoires de diagnostic génétique, Institut de Génétique Médicale d’Alsace, Strasbourg, France
| | - Marie-Cécile Maniere
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Ste Elisabeth, 67000, Strasbourg, France
- Hôpitaux Universitaires de Strasbourg (HUS), Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), Fédération de Médecine Translationnelle de Strasbourg (FMTS), 11 rue Human, 67000, Strasbourg, France
| | - Sarah Dubourg
- Hôpitaux Universitaires de Strasbourg (HUS), Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Strasbourg, France
| | - Agnès Bloch-Zupan
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Ste Elisabeth, 67000, Strasbourg, France
- Hôpitaux Universitaires de Strasbourg (HUS), Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Strasbourg, France
- Université de Strasbourg, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U1258, CNRS- UMR7104, Illkirch, France
- Université de Strasbourg, Institut d’études avancées (USIAS), Strasbourg, France
| | - Marion Strub
- Université de Strasbourg, Faculté de Chirurgie Dentaire, 8 rue Ste Elisabeth, 67000, Strasbourg, France
- Hôpitaux Universitaires de Strasbourg (HUS), Pôle de Médecine et Chirurgie Bucco-dentaires, Hôpital Civil, Centre de référence des maladies rares orales et dentaires O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), Fédération de Médecine Translationnelle de Strasbourg (FMTS), 11 rue Human, 67000, Strasbourg, France
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23
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Aslam‐Pervez B, Carr E. Bilateral 'kissing' molars: A case report. Clin Case Rep 2022; 10:e6407. [PMID: 36381048 PMCID: PMC9653165 DOI: 10.1002/ccr3.6407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 09/05/2022] [Accepted: 09/20/2022] [Indexed: 11/14/2022] Open
Abstract
'Kissing molars', were described by Van Hoof in 1973 as when the occlusal surfaces of impacted molars are united by the same follicular space and the roots point in the opposite direction. There are very few published cases in the literature, and it is an extremely rare form of impaction.
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Affiliation(s)
- Bilal Aslam‐Pervez
- Oral and Maxillofacial Surgery, NHS Greater Glasgow and ClydeQueen Elizabeth University HospitalGlasgowUK
| | - Emma Carr
- Oral and Maxillofacial Surgery, NHS Greater Glasgow and ClydeQueen Elizabeth University HospitalGlasgowUK
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24
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Yamaguchi T, Hosomichi K, Shirota T, Miyamoto Y, Ono W, Ono N. Primary failure of tooth eruption: Etiology and management. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:258-267. [PMID: 36159186 PMCID: PMC9489741 DOI: 10.1016/j.jdsr.2022.08.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 07/01/2022] [Accepted: 08/21/2022] [Indexed: 11/16/2022] Open
Abstract
Primary failure of eruption (PFE) is a rare disorder defined as incomplete tooth eruption despite the presence of a clear eruption pathway. PFE is known to be caused by rare variants in the parathyroid hormone 1 receptor gene (PTH1R). Although several PTH1R variants have been reported, the etiology of PFE remains unclear. However, important studies that help elucidate the pathology of PFE have recently been published. The purpose of this review is to summarize current treatment options, clinical symptoms or phenotypes for diagnosis, genetic information including solid evidence in mouse disease models and disease-specific induced pluripotent stem cells, thus approaching the etiology of PFE from the perspective of the latest research.
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Affiliation(s)
| | - Kazuyoshi Hosomichi
- Department of Bioinformatics and Genomics, Graduate School of Advanced Preventive Medical Sciences, Kanazawa University, Ishikawa, Japan
| | - Tatsuo Shirota
- Department of Oral and Maxillofacial Surgery, Showa University School of Dentistry, Tokyo, Japan
| | - Yoichi Miyamoto
- Department of Biochemistry, Showa University School of Dentistry, Tokyo, Japan
| | - Wanida Ono
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA
| | - Noriaki Ono
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA
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25
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Ruíz-Mora GA, Arriola-Guillén LE, Aliaga-Del Castillo A, Rodríguez-Cárdenas YA, Avalos-Hernández RE. Multiple eruptive delay as a variant of primary eruption failure. A preliminary case report. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2022; 123:e922-e929. [PMID: 35850440 DOI: 10.1016/j.jormas.2022.07.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/23/2022] [Accepted: 07/15/2022] [Indexed: 11/18/2022]
Abstract
Primary failure of eruption (PFE) is an autosomal disease that occurs in approximately 0.06% of the population and is defined as the malfunction of dental eruptive mechanisms with delay and absence of these processes in a non-ankylosed tooth. Treatment options for patients with eruptive delays range from prosthetic to surgical interventions. Although this condition is relatively rare, the occurrence of eruptive disorders in clinical dental practice is becoming more frequent. Correct diagnosis of this eruptive anomaly plays an essential role in treatment planning. The aim of this case report was to describe the treatment of a case of multiple PFE with a biomechanical approach to extrusive traction using NiTi closed coil springs and a customized rigid anchorage. In conclusion, complex orthodontic cases with eruptive delay and variants of PFE can be successfully intervened to make morphologically and functionally compromised dental organs viable, if diagnosed and treated in a timely and preventive manner by a multidisciplinary approach using alternative biomechanics for efficient osteogenic traction.
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Affiliation(s)
- Gustavo Armando Ruíz-Mora
- Division of Orthodontics, Faculty of Dentistry, Universidad Nacional de Colombia, Bogotá D.C, Colombia; and Associate Professor of the Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú
| | - Luis Ernesto Arriola-Guillén
- Division of Orthodontics and Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú.
| | - Aron Aliaga-Del Castillo
- Postdoctoral Fellow. Department of Orthodontics, Bauru Dental School. University of São Paulo, Brazil
| | - Yalil Augusto Rodríguez-Cárdenas
- Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú. Associate Professor of the Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Nacional de Colombia, Bogotá D.C, Colombia
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26
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Küchler EC, Henklein SD, Proff P, Lepri CP, Perin CP, Paddenberg E, Roskamp L, Baratto-Filho F, de Menezes-Oliveira MAH, Kirschneck C. Single Nucleotide Polymorphisms in COX2 Is Associated with Persistent Primary Tooth and Delayed Permanent Tooth Eruption. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:10047. [PMID: 36011680 PMCID: PMC9408601 DOI: 10.3390/ijerph191610047] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Persistent primary tooth (PPT) is a prevalent clinical condition that occurs when a primary tooth is over-retained beyond the established period of its normal exfoliation time, remaining in the oral cavity. Many factors could be involved in the risk of PPT; therefore, the aim of this study was to evaluate if single nucleotide polymorphisms (SNPs) in the COX2 gene are associated with PPT. Children undergoing orthodontic treatment were screened. Orthopantomographs were assessed to evaluate PPT according to the Nolla stage of its permanent successor. The primary tooth was considered retained when its successor permanent tooth was in Nolla stage 8 and below the alveolar crypt, Nolla stage 9, or Nolla stage 10. A saliva sample from each child was collected and used for DNA extraction. A real-time PCR of two SNPs, rs689466 (-1195 G/A) and rs5275 (+665 T/C), was performed. A chi-square test was used to compare the allele and genotype distribution. Haplotype analysis was also performed. A total of 100 children were included in the study. Fifty-one had at least one PPT, while 49 children were classified as a control. The number of teeth persistent in the oral cavity ranged from 1 to 8. The genotype distribution was associated with PPT in the co-dominant model (p = 0.006) for SNP rs5275. The individuals that carry two T alleles (TT) compared with the individuals that carry at least one C allele (C + TC) had an almost three times higher chance of presenting with PPT (p = 0.012; OR = 2.99, CI95% 1.28 to 6.95-recessive model). The haplotype C-A for the SNPs rs5275 and rs689466, respectively, was significantly associated (p = 0.042). In conclusion, single nucleotide polymorphisms in the gene encoding for COX2 are associated with persistent primary tooth and may delay permanent tooth eruption.
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Affiliation(s)
- Erika Calvano Küchler
- Department of Orthodontics, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
- School of Dentistry, Tuiuti University of Paraná, Rua Sydnei Antonio Rangel Santos, 238-Santo Inacio, Curitiba 82010-330, PR, Brazil
| | | | - Peter Proff
- Department of Orthodontics, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - César Penazzo Lepri
- Department of Biomaterials, University of Uberaba-UNIUBE, Uberaba 38010-200, MG, Brazil
| | - Camila Paiva Perin
- School of Dentistry, Tuiuti University of Paraná, Rua Sydnei Antonio Rangel Santos, 238-Santo Inacio, Curitiba 82010-330, PR, Brazil
| | - Eva Paddenberg
- Department of Orthodontics, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Liliane Roskamp
- School of Dentistry, Tuiuti University of Paraná, Rua Sydnei Antonio Rangel Santos, 238-Santo Inacio, Curitiba 82010-330, PR, Brazil
| | - Flares Baratto-Filho
- School of Dentistry, Tuiuti University of Paraná, Rua Sydnei Antonio Rangel Santos, 238-Santo Inacio, Curitiba 82010-330, PR, Brazil
- School of Dentistry, Univille University, Rua Paulo Malschitzki, 10, Zona Industrial Norte, Joinville 89219-710, SC, Brazil
| | | | - Christian Kirschneck
- Department of Orthodontics, University of Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
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27
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Frequency and Local Etiological Factors of Impaction of Permanent Teeth among 1400 Patients in a Greek Population. Dent J (Basel) 2022; 10:dj10080150. [PMID: 36005248 PMCID: PMC9406841 DOI: 10.3390/dj10080150] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/25/2022] [Accepted: 08/09/2022] [Indexed: 11/19/2022] Open
Abstract
Background: The purpose of this study is to analyze the frequency of impaction of permanent teeth, beyond the third molars, and to highlight the factors causing this condition. Methods: Panoramic radiographs of 1400 patients that sought orthodontic treatment in private practice were retrieved and examined. All teeth that had not been erupted at the time of the examination while their root formation was completed were considered impacted. Results: In total, 212 out of 1400 patients had at least one impacted tooth (15.14%). The highest incidence of tooth impaction was in the canines of the maxilla, followed by the central incisors of the maxilla, the second molars of the mandible and the second premolars of the mandible. The most common etiological factors responsible for the impaction were the ectopic eruption pathway, loss of space in the arch, the ankylosis of the deciduous teeth and the presence of supernumerary teeth. Conclusions: Tooth impaction is frequently seen in everyday orthodontic practice. The upper canines are the teeth most frequently associated with impaction and failure of eruption. It is important to diagnose cases of impaction early on and identify the etiological factors in order to achieve immediate and effective treatment per patient.
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Alshaya SI, Alanazi AF, Aldawish SS, Alsuhaim MM, Alomar MS, Almuaytiq YM, Alfahad SA, Almousa AAS, Alassaf A, Mallineni SK. Infraocclusion: Prevalence, Characteristics, and Associated Dental Anomalies in Arabian Children. BIOMED RESEARCH INTERNATIONAL 2022; 2022:6624804. [PMID: 35915788 PMCID: PMC9338852 DOI: 10.1155/2022/6624804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/27/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022]
Abstract
AIM To analyze the distribution and characteristics of infraocclusion among Arabian children in primary dentition and its associated dental anomalies. METHODS A radiographic analysis was performed retrospectively using digital panoramic radiographs of children attending the pediatric dental clinic of College of Dentistry, Majmaah University, Saudi Arabia, from January 2019 to May 2021. The panoramic radiographs were analyzed to assess the distribution and characteristics of infraocclusion and its associated dental anomalies. Descriptive statistics were used for comparisons using SPSS version 21.0 (IBM Corp., Armonk, N.Y., USA). The chi-square test was used to compare percentages. RESULTS Among the study population (542), only 40 children reported infraocclusion of 65 primary molars. Infraocclusion was common in males (90%) and very frequent in the mandibular arch (n = 48 teeth). In the primary dentition, unilateral infraocclusion (62.5%) was very frequent than bilateral presence (37.5%). Single molars were involved in 50% of the patients, while two, three, and four molars were involved in 42.5%, 2.5%, and 5% of cases. The mandibular second primary molar was frequently affected with infraocclusion, while the maxillary first primary molar was less commonly affected. In the mandibular arch, the second primary molar (28, 58%) was more commonly affected with infraocclusion than the mandibular first primary molars and maxillary primary and secondary molars (p < 0.05). The majority of the infraoccluded molars were mild (75%), followed by moderate (23.5%) and severe (1.5%). Hypodontia (12.5%) is frequently associated with infraocclusion, followed by supernumerary teeth (5%) and radix entomolaris of the first permanent mandibular molars (5%). Infraocclusion was more in the second primary molar mandibular arch, while in the maxillary arch, the first primary molars were commonly affected (p > 0.05). CONCLUSION In Arabian children, infraocclusion was commonly observed in mandibular second primary molars. Unilateral infraocclusion is a mild type of infraocclusion frequent in Arabian children. Numerical anomalies such as hypodontia and supernumerary teeth are associated with infraocclusion.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Abdullah Alassaf
- Department of Preventive Dental Science, College of Dentistry, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Sreekanth Kumar Mallineni
- Center for Transdisciplinary Research (CFTR), Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College, Saveetha University, Chennai, 600077 Tamil Nadu, India
- Division for Globalization Initiative, Liaison Center for Innovative Dentistry Graduate School of Dentistry, Tohoku University, Sendai, Japan
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Avalos-Hernández RE, Arriola-Guillén LE, Aliaga-Del Castillo A, Rodríguez-Cárdenas YA, Ruíz-Mora GA. Primary failure of eruption: occlusal and dentoalveolar characteristics in mixed and permanent dentition. A study with cone beam computed tomography. J Clin Exp Dent 2022; 14:e520-e527. [PMID: 35912030 PMCID: PMC9328488 DOI: 10.4317/jced.59657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 05/26/2022] [Indexed: 12/05/2022] Open
Abstract
Background The main objective of this study was to describe the dentoalveolar and occlusal characteristics of subjects with primary failure of eruption (PFE) in cone beam computed tomography (CBCT) and compare them with a control group without the anomaly.
Material and Methods This retrospective and comparative study evaluated CBCT images of 80 permanent molars divided into 2 groups of 40 molars each, which had or did not have PFE characteristics. Using CBCT a calibrated orthodontist performed 23 measurements related to the distances of the cusps to the occlusal, palatal and mandibular planes and measured the buccal-palatal and mesiodistal widths of the molar crowns and their root lengths. Independent Student’s t or Mann-Whitney U tests were used to compare occlusal and dentoalevolar characteristics between groups according to the normality of the data. P<0.05.
Results Molars affected by PFE were smaller in coronal dimensions in the PFE compared to the non-PFE group (Buccal-palatal crown width 11.60±0.95mm vs. 12.21±1.09 mm; p<0.001; and mesiodistal crown width 10.81± 1.07 mm vs. 11.84±1.32mm, respectively; p<0.001). The distal and mesial root lengths were approximately 2 mm smaller in the PFE group (p<0 .001). The three-dimensional bony position was more convergent with respect to the palatal plane, i.e., the crown was more inclined palatally and distally in the PFE compared to the non-PFE group.
Conclusions Patients with molars affected by PFE present smaller bucco-palatal, mesio-distal coronal widths and mesial and distal root lengths than those without PFE and in these teeth the crowns are more inclined palatally and distally in upper molars. These specific characteristics may be pathognomonic of PFE and should be considered by clinicians when evaluating or treating patients with this condition. Key words:Occlusal characteristics, primary failure of eruption, cone-beam CT.
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Affiliation(s)
| | - Luis-Ernesto Arriola-Guillén
- Division of Orthodontics and Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú
| | - Aron Aliaga-Del Castillo
- Postdoctoral Fellow. Department of Orthodontics, Bauru Dental School. University of São Paulo, Brazil
| | - Yalil-Augusto Rodríguez-Cárdenas
- Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú. Associate Professor of the Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Nacional de Colombia, Bogotá D.C, Colombia
| | - Gustavo-Armando Ruíz-Mora
- Division of Orthodontics, Faculty of Dentistry, Universidad Nacional de Colombia, Bogotá D.C, Colombia; and Associate Professor of the Division of Oral and Maxillofacial Radiology, School of Dentistry, Universidad Científica del Sur, Lima, Perú
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Roulias P, Kalantzis N, Doukaki D, Pachiou A, Karamesinis K, Damanakis G, Gizani S, Tsolakis AI. Teeth Eruption Disorders: A Critical Review. CHILDREN 2022; 9:children9060771. [PMID: 35740708 PMCID: PMC9222051 DOI: 10.3390/children9060771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 11/16/2022]
Abstract
Dental eruption refers to the vertical displacement of a tooth from its initial non-functional towards its functional position. Tooth eruption disorders may be expressed in various clinical conditions, which may be grouped as “primary retention” and “secondary retention”. The purpose of this article is to review the literature and the clinical parameters of the various conditions related to tooth eruption disorders. Materials and Methods: The search strategy of this critical review included keywords in combination with MeSH terms in Medline, Scopus, and Cochrane Library until February 2022 and only in English. Results: “Primary Failure of Eruption” (PFE) occurs during the eruption process and includes clinical characteristics of both primary and secondary retention, which make diagnosis difficult. PFE is distinguished by Types I and II. In Type I, the defect in the eruption process occurs in all the relative teeth at the same time, whilst in Type II, the clinical expressions vary in multiple quadrants of the mouth, and the second molars erupt more. The variability of the PFE’s clinical spectrum seems to be connected to a genetic origin. The differential diagnosis among single ankylosis, secondary retention, and PFE is based on the occlusal relationship between the upper and the lower teeth distally, most commonly the first molar, which has not yet fully erupted. The treatment approach depends on many factors and combines surgical and orthodontic techniques.
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Affiliation(s)
- Panagiotis Roulias
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.D.); (A.I.T.)
- Correspondence:
| | | | - Dafni Doukaki
- Independent Researcher, 11527 Athens, Greece; (N.K.); (D.D.); (K.K.)
| | - Aspasia Pachiou
- Department of Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | | | - George Damanakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.D.); (A.I.T.)
| | - Sotiria Gizani
- Department of Pediatric Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Apostolos I. Tsolakis
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece; (G.D.); (A.I.T.)
- Department of Orthodontics, Case Western Reserve University, Cleveland, OH 44106, USA
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Meade MJ, Dreyer CW. Eruption disturbances in the mixed dentition: orthodontic considerations for primary dental care. Aust Dent J 2022; 67 Suppl 1:S14-S23. [PMID: 35916055 DOI: 10.1111/adj.12931] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2022] [Indexed: 01/07/2023]
Abstract
The primary dental care clinician is in a prime position to identify deviations from normal dental development. Disturbances can affect any new erupting tooth. The objective of this narrative review is to describe several situations in which eruption disturbances can arise during the mixed dentition. It will provide an overview of the orthodontic considerations of these disturbances in addition to key summary points on interceptive management, based on the best available evidence.
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Affiliation(s)
- M J Meade
- Orthodontic Unit, Adelaide Dental School, The University of Adelaide, South Australia, Australia
| | - C W Dreyer
- Orthodontic Unit, Adelaide Dental School, The University of Adelaide, South Australia, Australia
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Awad MG, Dalbah L, Srirengalakshmi M, Venugopal A, Vaid NR. Review and case report of the treatment in a young girl with primary failure of eruption. Clin Case Rep 2022; 10:e05632. [PMID: 35340651 PMCID: PMC8931470 DOI: 10.1002/ccr3.5632] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 03/03/2022] [Accepted: 03/08/2022] [Indexed: 11/18/2022] Open
Abstract
Any localized non-eruption of teeth can be attributed to myriad of factors. A failure of a permanent tooth to erupt or cessation of initial eruption with no obvious local/systemic causative factor is said to be primary failure of eruption (PFE). The etio-pathogenesis of PFE is due to the mutation of PTH1R gene. Clinical features such as infra-occluded teeth, posterior open bite, lack of any cause or habit are usually attributed to diagnosing the condition, and a confirmatory diagnosis is done by the gene analysis of PTH1R gene. Treatment of such a condition is tricky as any application of orthodontic traction to teeth affected by PFE will not be successful and may cause ankylosis. This correspondence reviews and demonstrates the treatment of a case of PFE to restore function and esthetics to the best possible outcome.
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Affiliation(s)
| | | | - M. Srirengalakshmi
- Department of OrthodonticsSaveetha Dental CollegeSaveetha Institute of Medical and Technical SciencesChennaiIndia
| | - Adith Venugopal
- Department of OrthodonticsSaveetha Dental CollegeSaveetha Institute of Medical and Technical SciencesChennaiIndia
- Department of OrthodonticsUniversity of PuthisastraPhnom PenhCambodia
| | - Nikhilesh R. Vaid
- Department of OrthodonticsSaveetha Dental CollegeSaveetha Institute of Medical and Technical SciencesChennaiIndia
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Yassin SM, Alkahtani ZM, Abdul Khader M, Almoammar S, Dawasaz AA, Asif SM, Togoo RA. Applicability of Willems model of dental age estimation in a sample of southern Saudi Arabian children. AUST J FORENSIC SCI 2022. [DOI: 10.1080/00450618.2021.2002408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Syed M. Yassin
- Department of Pediatric Dentistry and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Zuhair M. Alkahtani
- Department of Pediatric Dentistry and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Mohasin Abdul Khader
- Department of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Salem Almoammar
- Department of Pediatric Dentistry and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Ali Azhar Dawasaz
- Department of Diagnostic Sciences and Oral Biology, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Shaik Mohammed Asif
- Department of Diagnostic Sciences and Oral Biology, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
| | - Rafi Ahmad Togoo
- Department of Pediatric Dentistry and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
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Futyma-Gąbka K, Manaj A, Osiak A, Piskórz M, Różyło-Kalinowska I. Evaluation of haller's cells prevalence in a sample of Polish population assessed using panoramic radiographs. INDIAN JOURNAL OF MEDICAL SPECIALITIES 2022. [DOI: 10.4103/injms.injms_68_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ray JG, Dutta S, Sarangi S, Yadav P. Noneruption of teeth in amelogenesis imperfecta: A report of two cases and review. J Oral Maxillofac Pathol 2022; 26:254-258. [PMID: 35968177 PMCID: PMC9364627 DOI: 10.4103/jomfp.jomfp_471_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 02/03/2021] [Accepted: 07/03/2021] [Indexed: 11/22/2022] Open
Abstract
Amelogenesis imperfecta (AI) comprises a complicated group of conditions, involving a structural defect of the tooth enamel, owing to certain genetic disturbances. It is expressed as an autosomal dominant, autosomal recessive or X-linked recessive trait. The structural pattern and clinical appearances of all the teeth, including those in the deciduous as well as the permanent dentition, are affected. It may be differentiated into three main divisions such as hypoplastic, hypocalcific and hypomaturative patterns. Eruption of tooth refers to a complex coordinated physiological process characterized by the movement of a tooth from its initial developmental position within the jaws to its final functional position in the occlusal plane, dictated crucially by dental follicle, bony remodeling metabolic alteration and molecular determinants. Alteration involving any one of the factors might cause hindrances. Herein, we report two cases with AI associated with noneruption.
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Affiliation(s)
- Jaygopal G Ray
- Department of Oral Pathology, Burdwan Dental College and Hospital, Burdwan, West Bengal, India
| | - Sayani Dutta
- Department of Oral Pathology, Burdwan Dental College and Hospital, Burdwan, West Bengal, India
| | - Snehanjan Sarangi
- Department of Oral Pathology, Burdwan Dental College and Hospital, Burdwan, West Bengal, India,Address for correspondence: Dr. Snehanjan Sarangi, FD-9, Flat No. 3, Salt Lake, Kolkata - 700 106, West Bengal, India. E-mail:
| | - Priyanka Yadav
- Department of Public Health Dentistry, Burdwan Dental College and Hospital, Burdwan, West Bengal, India
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Bach A, Parry A, Lacerda RP, Gomez AP. Nasolacrimal duct disease secondary to an unerupted tooth in a dog. VETERINARY RECORD CASE REPORTS 2021. [DOI: 10.1002/vrc2.247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ana Bach
- Primary Care Willows Veterinary Centre & Referral Service Solihull West Midlands UK
| | - Andrew Parry
- Diagnostic Imaging Willows Veterinary Centre & Referral Service Solihull West Midlands UK
| | | | - Alberto Palella Gomez
- Ophthalmology Willows Veterinary Centre & Referral Service Solihull West Midlands UK
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Grippaudo C, D'Apolito I, Cafiero C, Re A, Chiurazzi P, Frazier-Bowers SA. Validating clinical characteristic of primary failure of eruption (PFE) associated with PTH1R variants. Prog Orthod 2021; 22:43. [PMID: 34897565 PMCID: PMC8666410 DOI: 10.1186/s40510-021-00387-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 10/23/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Primary failure of eruption (PFE) is a hereditary condition, and linkage with variants in the PTH1R gene has been demonstrated in many cases. The clinical severity and expression of PFE is variable, and the genotype-phenotype correlation remains elusive. Further, the similarity between some eruption disorders that are not associated with PTH1R alterations is striking. To better understand the genotype-phenotype correlation, we examined the relationship between the eruption phenotype and PTH1R genotype in 44 patients with suspected PFE and 27 unaffected relatives. Sanger sequencing was employed to analyze carefully selected PFE patients. Potential pathogenicity of variants was evaluated against multiple genetic databases for function prediction and frequency information. RESULTS Mutational analysis of the PTH1R coding sequence revealed 14 different variants in 38 individuals (30 patients and 8 first-degree relatives), 9 exonic and 5 intronic. Their pathogenicity has been reported and compared with the number and severity of clinical signs. In 72.7% of patients with pathogenic variants, five clinical and radiographic criteria have been found: involvement of posterior teeth, involvement of the distal teeth to the most mesial affected, supracrestal presentation, altered vertical growth of the alveolar process and posterior open-bite. In cases with mixed dentition (3), the deciduous molars of the affected quadrant were infraoccluded. DISCUSSION The probability of an affected patient having a PTH1R variant is greater when five specific clinical characteristics are present. The likelihood of an eruption defect in the absence of specific clinical characteristics is rarely associated with a PTH1R mutation. CONCLUSIONS We report here that systematic clinical and radiographic observation using a diagnostic rubric is highly valuable in confirming PFE and offers a reliable alternative for accurate diagnosis.
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Affiliation(s)
- Cristina Grippaudo
- School of Dentistry, Università Cattolica del Sacro Cuore, L.go Agostino Gemelli 8, 00168, Rome, Italy.,Fondazione Policlinico Universitario "A. Gemelli" IRCCS, L.go Agostino Gemelli 8, 00168, Rome, Italy
| | - Isabella D'Apolito
- School of Dentistry, Università Cattolica del Sacro Cuore, L.go Agostino Gemelli 8, 00168, Rome, Italy
| | | | - Agnese Re
- Università Cattolica del Sacro Cuore, 00168, Rome, Italy
| | - Pietro Chiurazzi
- Dipartimento Universitario Scienze della Vita e Sanità Pubblica, Sezione di Medicina Genomica, Università Cattolica del Sacro Cuore, Largo Francesco Vito 1, 00168, Rome, Italy. .,UOC Genetica Medica, Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Largo Agostino Gemelli 8, 00168, Rome, Italy.
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Bastos VC, Gomez RS, Gomes CC. Revisiting the human dental follicle: From tooth development to its association with unerupted or impacted teeth and pathological changes. Dev Dyn 2021; 251:408-423. [PMID: 34324745 DOI: 10.1002/dvdy.406] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/16/2021] [Accepted: 07/22/2021] [Indexed: 02/06/2023] Open
Abstract
Dental follicles are involved in odontogenesis, periodontogenesis, and tooth eruption. Dental follicles are unique structures, considering that their remnants can persist within the jawbones after odontogenesis throughout life if the tooth does not erupt. Pathological changes may occur in these tissues as individuals age. The changes range from benign to life threatening. Thus, the assessment of age-related changes in dental follicles associated with unerupted teeth is of paramount importance. In this review, we summarize the physiological roles and changes in dental follicles in odontogenesis, tooth eruption, and aging, in addition to the pathological changes associated with these structures. We encourage investigators to consider this peculiar tissue as a unique model and explore its potential to clarify its importance from the viewpoints of developmental biology, tissue physiology, and pathology.
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Affiliation(s)
- Victor Coutinho Bastos
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil.,Department of Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Ricardo Santiago Gomez
- Department of Oral Surgery and Pathology, Faculty of Dentistry, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Carolina Cavaliéri Gomes
- Department of Pathology, Biological Sciences Institute, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Brazil
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Rare Case of Unerupted Second Deciduous Molar with Congenitally Missing Second Permanent Premolar: Case Report. BALKAN JOURNAL OF DENTAL MEDICINE 2020. [DOI: 10.2478/bjdm-2020-0030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Summary
Background/Aim: The purpose of this report is to present an unusual case of failure of eruption of a second deciduous molar and its management.
Case Report: An 8-year-old boy presented with a complaint of a missing tooth. Radiographic examination revealed the second deciduous molar was impacted without any mechanical obstacles, like an odontoma or supernumerary teeth, being present.
Conclusions: The case presented in this report is of scientific relevance due to the rarity of this type of pathology and the interesting histopathology.
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40
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Histopathological features assessment of suspected pathologic pericoronal tissue of embbeded teeth. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY MEDICINE AND PATHOLOGY 2020. [DOI: 10.1016/j.ajoms.2020.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Huang W, Shan B, Ang BS, Ko J, Bloomstein RD, Cangialosi TJ. Review of Etiology of Posterior Open Bite: Is There a Possible Genetic Cause? Clin Cosmet Investig Dent 2020; 12:233-240. [PMID: 32612395 PMCID: PMC7323810 DOI: 10.2147/ccide.s231670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 04/22/2020] [Indexed: 11/23/2022] Open
Abstract
Posterior open bite (POB) is one of the most severe malocclusions that can impair patients' masticatory functions, yet it is also a condition that is poorly understood and not well studied. Most reported cases are either sporadic or idiosyncratic with a diverse yet poorly understood etiology. Although primary failure of eruption (PFE), lateral tongue thrust, and certain medical syndromes or pathology of the temporomandibular joints have all been shown to cause POB, the complex interplay of environmental and genetic factors makes its etiopathogenesis a difficult subject to understand and investigate. Here, we provide a comprehensive review of the etiology of posterior open bite. Additionally, a genetic cause for POB is proposed through a report of an apparently non-syndromic familial case series with high POB penetrance across two generations. Further investigations of the gene(s) and mechanism(s) involved can not only provide a unique opportunity to better understand POB and the intricate muscular-occlusal relationship, but also offer powerful insight into the most effective approaches to clinical management of these (and potentially other) malocclusions.
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Affiliation(s)
- Wei Huang
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, NJ 07103, USA
| | - Bo Shan
- School of Public Health, Rutgers University, Newark, NJ, 07103, USA
| | - Brittany S Ang
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, NJ 07103, USA
| | - Jennifer Ko
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, NJ 07103, USA
| | - Richard D Bloomstein
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, NJ 07103, USA
| | - Thomas J Cangialosi
- Department of Orthodontics, Rutgers School of Dental Medicine, Newark, NJ 07103, USA
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Cui C, Bi R, Liu W, Guan S, Li P, Song D, Xu R, Zheng L, Yuan Q, Zhou X, Fan Y. Role of PTH1R Signaling in Prx1 + Mesenchymal Progenitors during Eruption. J Dent Res 2020; 99:1296-1305. [PMID: 32585127 DOI: 10.1177/0022034520934732] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Tooth eruption is a complex process requiring precise interaction between teeth and adjacent tissues. Molecular analysis demonstrates that bone remodeling plays an essential role during eruption, suggesting that a parathyroid hormone 1 receptor (PTH1R) gene mutation is associated with disturbances in bone remodeling and results in primary failure of eruption (PFE). Recent research reveals the function of PTH1R signaling in mesenchymal progenitors, whereas the function of PTH1R in mesenchymal stem cells during tooth eruption remains incompletely understood. We investigated the specific role of PTH1R in Prx1+ progenitor expression during eruption. We found that Prx1+-progenitors occur in mesenchymal stem cells residing in alveolar bone marrow surrounding incisors, at the base of molars and in the dental follicle and pulp of incisors. Mice with conditional deletion of PTH1R using the Prx1 promoter exhibited arrested mandibular incisor eruption and delayed molar eruption. Micro-computed tomography, histomorphometry, and molecular analyses revealed that mutant mice had significantly reduced alveolar bone formation concomitant with downregulated gene expression of key regulators of osteogenesis in PTH1R-deficient cells. Moreover, culturing orofacial bone-marrow-derived mesenchymal stem cells (OMSCs) from Prx1Cre;PTH1Rfl/fl mice or from transfecting Cre recombinase adenovirus in OMSCs from PTH1Rfl/fl mice suggested that lack of Pth1r expression inhibited osteogenic differentiation in vitro. However, bone resorption was not affected by PTH1R ablation, indicating the observed reduced alveolar bone volume was mainly due to impaired bone formation. Furthermore, we found irregular periodontal ligaments and reduced Periostin expression in mutant incisors, implying loss of PTH1R results in aberrant differentiation of periodontal ligament cells. Collectively, these data suggest that PTH1R signaling in Prx1+ progenitors plays a critical role in alveolar bone formation and periodontal ligament development during eruption. These findings have implications for our understanding of the physiologic and pathologic function of PTH1R signaling in tooth eruption and the progression of PFE.
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Affiliation(s)
- C Cui
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - R Bi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - W Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - S Guan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - P Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - D Song
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - R Xu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - L Zheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Q Yuan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - X Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
| | - Y Fan
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Sichuan, China
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Yassin SM. Accuracy of Demirjian’s four methods of dental age estimation in a sample of Saudi Arabian population. AUST J FORENSIC SCI 2020. [DOI: 10.1080/00450618.2020.1766110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Syed M. Yassin
- Department of Pediatric Dentistry and Orthodontic Sciences, College of Dentistry, King Khalid University, Abha, Kingdom of Saudi Arabia
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Primary Retention of Molars and RANKL Signaling Alteration during Craniofacial Growth. J Clin Med 2020; 9:jcm9040898. [PMID: 32218136 PMCID: PMC7231205 DOI: 10.3390/jcm9040898] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 03/20/2020] [Accepted: 03/20/2020] [Indexed: 12/21/2022] Open
Abstract
The primary retention of molars observed in clinic corresponds to a still-unexplained absence of molar eruption despite the presence of an eruption pathway, resembling the experimental transient inhibition of RANKL signaling in mice. The aim of the present study was to confront the hypothesis according to which the primary retention of molars is associated with transitory perturbations to RANKL signaling during growth as part of a wider craniofacial skeleton pattern. The experimental strategy was based on combining a clinical study and an animal study corresponding to the characterization of the craniofacial phenotypes of patients with primary retention of molars and analyses in mice of the consequences of transient inhibition of RANKL signaling on molar eruption and craniofacial growth. The clinical study validated the existence of a particular craniofacial phenotype in patients with primary retention of molars: a retromandibular skeletal class II typology with reduced mandibular dimensions which manifests itself at the dental level by a class II/2 with palatoversion of the upper incisors and anterior overbite. The animal study demonstrated that transient invalidation of RANKL signaling had an impact on the molar eruption process, the severity of which was dependent on the period of inhibition and was associated with a reduction in two craniofacial morphometric parameters: total skull length and craniofacial vault length. In conclusion, primary retention of molars may be proposed as part of the craniofacial skeleton phenotype associated with a transitory alteration in RANKL signaling during growth.
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Grippaudo C, Cafiero C, D'Apolito I, Re A, Genuardi M, Chiurazzi P, Frazier-Bowers SA. A novel nonsense PTH1R variant shows incomplete penetrance of primary failure of eruption: a case report. BMC Oral Health 2019; 19:249. [PMID: 31730001 PMCID: PMC6858648 DOI: 10.1186/s12903-019-0944-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 10/31/2019] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Aim of this work was to describe a rare inheritance pattern of Primary Failure of Eruption (PFE) in a small family with incomplete penetrance of PFE and a novel nonsense PTH1R variant. CASE PRESENTATION The proband, a 26 year-old man with a significant bilateral open-bite, was diagnosed with PFE using clinical and radiographic characteristics. DNA was extracted from the proband and his immediate family using buccal swabs and the entire PTH1R coding sequence was analyzed, revealing a novel heterozygous nonsense variant in exon 7 of PTH1R (c.505G > T). This variant introduces a premature stop codon in position 169, predicted to result in the production of a truncated and non-functional protein. This variant has never been reported in association with PFE and is not present in the Genome Aggregation Database (gnomAD). Interestingly, the c.505G > T variant has also been identified in the unaffected mother of our proband, suggesting incomplete penetrance of PFE. CONCLUSIONS In this study, we report a new PTH1R variant that segregates in an autosomal dominant pattern and causes PFE with incomplete penetrance. This underlines the diagnostic value of a thorough clinical and genetic analysis of all family members in order to estimate accurate recurrence risks, identify subtle clinical manifestations and provide proper management of PFE patients.
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Affiliation(s)
- Cristina Grippaudo
- Istituto di Clinica Odontoiatrica, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "A.Gemelli" IRCCS, Roma, Italy.
| | - Concetta Cafiero
- Istituto di Clinica Odontoiatrica, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "A.Gemelli" IRCCS, Roma, Italy
| | - Isabella D'Apolito
- Istituto di Clinica Odontoiatrica, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "A.Gemelli" IRCCS, Roma, Italy
| | - Agnese Re
- Istituto di Fisiologia Umana, Università Cattolica del Sacro Cuore, Roma, Italy.,Istituto di Biologia Cellulare e Neurobiologia, Consiglio Nazionale delle Ricerche (CNR), Roma, Italy
| | - Maurizio Genuardi
- Istituto di Medicina Genomica, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "A.Gemelli" IRCCS, Roma, Italy
| | - Pietro Chiurazzi
- Istituto di Medicina Genomica, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "A.Gemelli" IRCCS, Roma, Italy
| | - Sylvia A Frazier-Bowers
- Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
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Gama A, Perea L, Yepes C, Betancur JJ, Vargas J, Amiaud J, Babajko S, Lezot F, Castaneda B. [Effects of post-natal inhibition of RANKL on molar eruption and root formation in C57BL/6 mice]. Orthod Fr 2019; 90:55-63. [PMID: 30994449 DOI: 10.1051/orthodfr/2019008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 02/10/2019] [Indexed: 11/14/2022]
Abstract
INTRODUCTION Recent observations performed in the orthodontic department of La Pitié-Salpêtrière hospital in Paris reported an increase of non-familial eruption defects of permanent molars. Our recent data have evidenced the involvement of osteoclasts (OC) in both the eruption and the dental retention processes through the RANKL/RANK/OPG signaling pathway. These facts are at the origin of the hypothesis of the existence of an environmental etiology for those eruption defects that would correspond to the perturbation of cellular autocrine/paracrine signaling pathways as the RANKL/ RANK/OPG. MATERIALS AND METHODS C57BL/6 mice were submitted to repeated injections with anti-RANKL neutralizing antibody during the nine days following birth. A phenotypic comparison with transgenic mice overexpressing RANK was performed for the functional characterization of the RANKL/RANK/OPG pathway. The dento-alveolar complex was analyzed using micro-CT for bone density and Masson's trichrome staining for histological examination. RESULTS The RANKL transient invalidation of RANKL stopped the molar root development and tooth eruption contrary to transgenic mice overexpressing RANK. The recruitment and the OC activity were strongly impacted. DISCUSSION This research is of direct clinical interest in understanding the pathology of eruption as indirect in establishing orthodontic treatment protocols for particular cases.
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Affiliation(s)
- Andrea Gama
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, Équipe BERDAL, 75006 Paris, France - Laboratoire d'Histopathologie orale, Faculté des sciences de la santé, Université de Brasilia, Brasilia, Brésil
| | - Linamary Perea
- Faculté d'Odontologie, Université d'Antioquia, Medellín, Colombia
| | - Catalina Yepes
- Faculté d'Odontologie, Université d'Antioquia, Medellín, Colombia
| | - Jhon J Betancur
- Faculté d'Odontologie, Université d'Antioquia, Medellín, Colombia
| | - Jorge Vargas
- Faculté d'Odontologie, Université d'Antioquia, Medellín, Colombia
| | - Jerôme Amiaud
- INSERM UMRS 1238, Faculté de Médecine, Nantes, France
| | - Sylvie Babajko
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, Équipe BERDAL, 75006 Paris, France
| | | | - Beatriz Castaneda
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, Équipe BERDAL, 75006 Paris, France - Service d'Orthopédie Dento-faciale, Hôpital la Pitié Salpêtrière, Paris, France
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Applicability of Demirjian's method for dental age estimation in a group of Egyptian children. BDJ Open 2019; 5:2. [PMID: 30911408 PMCID: PMC6430778 DOI: 10.1038/s41405-019-0015-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/07/2019] [Accepted: 02/12/2019] [Indexed: 11/22/2022] Open
Abstract
Aims The aims of this study were to evaluate the applicability of Demirjian’s method for dental age assessment in a group of Egyptian children in Minia city and to develop an age predictive equation suitable for the studied group. Subjects and methods In this retrospective, blind, cross-sectional study, 160 dental panoramic radiographs (DPTs) were selected from 420 DPTs from healthy children aged between three and 10 years old from the archived medical files of patients attending Minia University Dental Hospital (MUDH) and evaluated to estimate dental ages. Results Age was overestimated for almost all of the studied subjects with an accuracy range from 0.18 to 1.19 years for males and from 0.08 to 0.87 years for females, with the exception of two age subgroups (9–10-year-old males and 10–11-year-old females, for which the mean difference values were −0.06 and −0.008 years, respectively). A Logistic regression was used to generate a suggested formula for dental age estimation. Conclusions Demirjian’s method may be unsuitable for Egyptian children living in Minia city. Development of a predication equation and the introduction of adaptable conversion tables to transform the maturity score into a dental age for Egyptian children may be suitable alternatives. The validity of the newly developed prediction equation must be tested among all Egyptian children.
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Yu X, Liu H, Li C, Du Y, Du Y, Zhang S. Periodontal ligament-associated protein-1 gets involved in the development of osseous eruption canal. J Mol Histol 2018; 50:35-42. [PMID: 30511172 DOI: 10.1007/s10735-018-9805-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Accepted: 11/28/2018] [Indexed: 01/09/2023]
Abstract
Osseous eruption is an important stage of tooth eruption process. The role of periodontal ligament-associated protein-1 (PLAP-1/asporin) in the development of osseous eruption canal remain undefined and were the focus of this study. C57BL/6 mice at postnatal days P11-13 and P 15-16 were chosen. The development of osseous eruption canal of lower first molar was observed and osteoclasts were detected by staining for tartrate-resistant acid phosphatase (TRAP). PLAP-1 expression in the process of osseous eruption (OE, P11-13) and post- osseous eruption (P-OE, P15-16) was assessed by immunohistochemistry, immunofluorescence and western blotting. Receptor activator of NF-κB ligand (RANKL) distribution in the process was also assessed by immunohistochemistry. A double immunofluorescence stain was used to reveal PLAP-1 in association with CD68 (osteoclast maker). Fresh occlusal tissues of erupting lower first molars at OE and P-OE were separated to detected RANKL/OPG ratio by western blotting to elucidate related mechanisms. At osseous eruption (OE), osseous and mucosal tissues could be observed on the occlusal side of lower first molar. Osseous eruption canal was developing. Many osteoclasts were found around occlusal alveolar bone in the development of osseous eruption canal. At post- osseous eruption (P-OE), osseous eruption canal had been built, only mucosal tissues were observed, and few osteoclasts were detected. More PLAP-1 expression was detected at OE, compared with that at P-OE. Similar distributions of PLAP-1 and RANKL in occlusal bone tissues of erupting lower first molars were detected at OE. Colocalization of PLAP-1 and CD68 revealed the positive relationship between PLAP-1 and osteoclasts in the development of osseous eruption canal. PLAP-1 positively correlated with RANKL and CD68+ osteoclasts, and areas of bone resorption. Higher RANKL/OPG ratio was detected at OE, compared with that at P-OE. PLAP-1 gets involved in the development of osseous eruption canal.
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Affiliation(s)
- Xijiao Yu
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, People's Republic of China
- Department of Endodontics, Jinan Stomatological Hospital, Jinan, 250001, Shandong, People's Republic of China
| | - Hongmei Liu
- Department of Endodontics, Jinan Stomatological Hospital, Jinan, 250001, Shandong, People's Republic of China
| | - Chong Li
- Department of Endodontics, Jinan Stomatological Hospital, Jinan, 250001, Shandong, People's Republic of China
| | - Yanmei Du
- Department of Endodontics, Jinan Stomatological Hospital, Jinan, 250001, Shandong, People's Republic of China
| | - Yi Du
- Department of Endodontics, Jinan Stomatological Hospital, Jinan, 250001, Shandong, People's Republic of China
| | - Shanyong Zhang
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai, People's Republic of China.
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