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Putrino A, Caputo M, Galeotti A, Marinelli E, Zaami S. Type I Dentin Dysplasia: The Literature Review and Case Report of a Family Affected by Misrecognition and Late Diagnosis. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1477. [PMID: 37629767 PMCID: PMC10456812 DOI: 10.3390/medicina59081477] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 08/09/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023]
Abstract
Background and Objectives: Type I dentin dysplasia (DD-I) is a rare genetic disorder with autosomal dominant or recessive inheritance at risk of late or long-misunderstood diagnosis because the teeth, compared to other degenerative dentin diseases, do not have coronal defects and/or alterations but only at the root level (absent, conical, pointed roots, and obliterated pulp canals). The first radiographic suspicion often occurs only in case of sudden mobility and/or abscesses of the permanent teeth. Genetic tests confirm the diagnosis. Case Presentation: This case report describes the oral and radiographic characteristics of two siblings, 12 and 10 years old, a male and a female, at an early age affected by DD-I, whose diagnosis was made for a first orthodontic visit. The father and the older child had already undergone dental and orthodontic treatments, respectively, without the disease being suspected by the dentist. Results: Genetic tests support the diagnosis of DD-I. Following the diagnosis, the patients began a process of close periodic checks every 3-4 months to monitor their situation. The male child lost upper lateral incisors, which were then replaced with a light nylon removable prosthesis. Conclusions: The ability to recognize the radiographic features characteristic of DD-I is very important to avoid prejudicial diagnostic delays and to be able to plan the long-term treatment of these patients better, especially when the pathology was primarily misrecognized in the family.
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Affiliation(s)
- Alessandra Putrino
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00161 Rome, Italy; (A.P.); (S.Z.)
| | - Martina Caputo
- Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | | | - Enrico Marinelli
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 04100 Latina, Italy;
| | - Simona Zaami
- Department of Anatomical, Histological, Forensic and Orthopedic Sciences, Sapienza University of Rome, 00161 Rome, Italy; (A.P.); (S.Z.)
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Ammar N, El-Tekeya MM. Hallermann–Streiff syndrome: Case report with abnormal pulp calcifications. FRONTIERS IN DENTAL MEDICINE 2022. [DOI: 10.3389/fdmed.2022.965560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Hallermann–Streiff syndrome (HSS) is a disorder of rare occurrence affecting the craniofacial complex, with approximately 200 cases reported in the literature. Nonetheless, its distinctive facial features render it highly recognizable. We present the case of a 5-year-old girl with this syndrome and review the dental manifestations and management in this patient. In addition to the diagnostic facial features of brachycephaly with frontal bossing, beak-shaped nose, microphthalmia, and mandibular retrusion, multiple dental manifestations were noted, including the absence of the mandibular condyle, ghost teeth, and unusual pulpal calcifications in both the primary and the permanent teeth, which have not been previously reported in a case of HSS. There is no consensus on the suitable treatment plan to be given for HSS patients from a young age due to an underreporting of these cases in the literature. In this report, we discuss pediatric dental management options for a patient with HSS and share her perspective of the treatment.
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Charisi C, Kodonas K, Keklikoglou K, Arhakis A, Arapostathis KA, Kotsanos N. Morphological, histological, and chemical analysis of first permanent molars with molar incisor malformation. Eur Arch Paediatr Dent 2022; 23:601-608. [PMID: 35759186 DOI: 10.1007/s40368-022-00723-9] [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: 02/01/2022] [Accepted: 06/02/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE Molar incisor malformation (MIM) is a dental anomaly rendering first permanent molar pulps inflamed/necrotic at a young age. It often affects permanent incisors, primary second molars and less frequently other teeth. The purpose of this study was to investigate the anatomy and histology of MIM in seeking insight into its pathogenesis. METHODS Five MIM first permanent molars were examined with micro-computed tomography (micro-CT) for 3D morphology, with scanning electron microscopy for microanatomy, with energy-dispersive X-ray spectrometer (EDS) for chemical composition and for histology with optical microscopy. Composition differences were statistically determined using one-way ANOVA. RESULTS Micro-CT confirmed dentin abnormalities in the middle and cervical third of the crown in the form of the radiodense 'cervical mineralized diaphragm' (CMD). This was peripherally intertwined with enamel fjords and projections severely disrupting the integrity of pulp chamber and its continuity with root canals. EDS showed increased Ca in CMD compared to dentin. The histological examination revealed anomalous osteodentin-like hard tissue with denticles in the CMD. CONCLUSION An interconnection of anomalous cervical enamel with crown CMD dentin preceded to the severe pulp chamber and root dysplasias in MIM molar teeth.
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Affiliation(s)
- C Charisi
- Department of Paediatric Dentistry, School of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece. .,, 36, El. Venizelou, 57008, Thessaloniki, Greece.
| | - K Kodonas
- Department of Endodontics, School of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - K Keklikoglou
- Biology Department, University of Crete, 70013, Heraklion, Crete, Greece.,Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research (HCMR), 71500, Heraklion, Crete, Greece
| | - A Arhakis
- Department of Paediatric Dentistry, School of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - K A Arapostathis
- Department of Paediatric Dentistry, School of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - N Kotsanos
- Department of Paediatric Dentistry, School of Dentistry, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
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Chetty M, Roomaney IA, Beighton P. Taurodontism in dental genetics. BDJ Open 2021; 7:25. [PMID: 34244468 PMCID: PMC8270984 DOI: 10.1038/s41405-021-00081-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/19/2021] [Accepted: 06/03/2021] [Indexed: 02/06/2023] Open
Abstract
Taurodontism is a dental anomaly defined by enlargement of the pulp chamber of multirooted teeth with apical displacement of the pulp floor and bifurcation of the roots. Taurodontism can be an isolated trait or part of a syndrome. A study was conducted to document the dental and craniofacial aspects of genetic thin bone disorders in South Africa. Sixty-four individuals with Osteogenesis imperfecta (OI), one individual with Pyle disease and one with Torg-Winchester syndrome respectively, were assessed clinically, radiographically and at a molecular level. Ten patients with OI XI and those with Pyle disease and Torg-Winchester syndrome had taurodontism. Taurodontism has been identified in several genetic disorders necessitating cognizance of the possible existence and implications of this characteristic when managing patients in the dental environment. Further studies should be directed toward identifying the incidence, etiology, and molecular pathways leading to taurodontism and its relationship to genetic syndromes.
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Affiliation(s)
- Manogari Chetty
- Department of Craniofacial Biology, Faculty of Dentistry, University of the Western Cape, Cape Town, South Africa.
- University of the Western Cape/University of Cape Town Combined Dental Genetics Clinic, Red Cross Childrens' Hospital, Cape Town, South Africa.
| | - Imaan A Roomaney
- Department of Craniofacial Biology, Faculty of Dentistry, University of the Western Cape, Cape Town, South Africa
- University of the Western Cape/University of Cape Town Combined Dental Genetics Clinic, Red Cross Childrens' Hospital, Cape Town, South Africa
| | - Peter Beighton
- Department of Craniofacial Biology, Faculty of Dentistry, University of the Western Cape, Cape Town, South Africa
- University of the Western Cape/University of Cape Town Combined Dental Genetics Clinic, Red Cross Childrens' Hospital, Cape Town, South Africa
- Division of Human Genetics, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
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Orthodontic Treatment of a Patient with Dentin Dysplasia Type I and Bilateral Maxillary Canine Impaction: Case Presentation and a Family-Based Genetic Analysis. CHILDREN-BASEL 2021; 8:children8060519. [PMID: 34207061 PMCID: PMC8234607 DOI: 10.3390/children8060519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/06/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022]
Abstract
Dentin dysplasia is a rare hereditary disorder, transmitted by autosomal dominant mode, affecting both dentin and pulp. In Type I crown morphology is normal, but root dentin organization loss leads to shorter roots. Mutations in the SSUH2, VPS4B and SMOC2 genes have been reported as responsible for this condition. Orthodontic treatment was conducted on an 11-year-old female patient presenting the disorder along with bilaterally impacted permanent maxillary canines, in close proximity to the roots of the lateral and central incisors. Treatment plan included lateral incisors extraction, surgical exposure and traction of the impacted canines. Light forces were applied from a custom-made trans-palatal arch. Comprehensive orthodontic treatment was performed using edgewise appliances. After 3 years and 2 months, group function occlusion was achieved. The canines underwent composite resin restorations. At one year post-retention, the dentition remained stable. Family-based genetic analysis did not reveal any mutations in the aforementioned genes pointing to further genetic heterogeneity of this disorder. As dental medicine becomes more sophisticated and personalized, the association between mutation type/function and orthodontic treatment response may provide useful therapeutic insights. The positive treatment response of the presented case could be attributed to a more “benign” mutation awaiting to be identified.
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Gopalakrishnan S, Balasubramaniam N, Ramamoorthi R, Vedachalam R. A case of multiple rootless teeth: A case report and review. J Oral Maxillofac Pathol 2021; 25:559. [PMID: 35281176 PMCID: PMC8859607 DOI: 10.4103/jomfp.jomfp_337_20] [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: 08/08/2020] [Accepted: 03/31/2021] [Indexed: 11/26/2022] Open
Abstract
Dentin dysplasia is a rare, hereditary disorder affecting the dental hard tissue. It is a congenital, autosomal dominant disease of unknown etiology that affects 1:100,000 populations. It may present as such affecting only the dental hard tissue or as one of the symptoms of underlying diseases such as calcinosis, Ehlers–Danlos syndrome, rhematoid arthitis, Vitaminosis D and Branchioskeletogenital syndrome. This was first described by Ballschmiede as rootless teeth in 1920 and termed as dentin dysplasia by Rushton in the year 1939. It is classified into Type I, II and III, in which Type III affects only the secondary dentition. This article reports a rare case of Type I dentin dysplasia in a 26-year-old male patient, and focus on clinical, radiological, ground section and histopathological aspects. It emphasizes the significance of early diagnosis and intervention for the psychological well-being of the individual.
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Krug R, Volland J, Reich S, Soliman S, Connert T, Krastl G. Guided endodontic treatment of multiple teeth with dentin dysplasia: a case report. Head Face Med 2020; 16:27. [PMID: 33203420 PMCID: PMC7672920 DOI: 10.1186/s13005-020-00240-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 10/22/2020] [Indexed: 11/23/2022] Open
Abstract
Background To report the outcome of guided endodontic treatment (GET) of a case of dentin dysplasia with pulp canal calcification (PCC) and apical periodontitis based on the use of a 3D-printed template designed by merging cone-beam computed tomography (CBCT) and surface scan data. Case presentation A 12-year old female with radicular dentin dysplasia type I (DD-1) presented for endodontic treatment. Radiography revealed PCC in all teeth and apical radiolucency in seven teeth (12, 15, 26, 31, 32, 36 and 46). Tooth 36 had the most acute symptoms and was thus treated first by conventional access cavity preparation and root canal detection. Despite meticulous technique, the distal and mesiolingual canals were perforated. The perforations were immediately repaired with mineral trioxide aggregate, and the decision was made to switch to guided endodontic treatment for the remaining 6 teeth. CBCT and intraoral surface scans were acquired and matched using coDiagnostix planning software (Dental Wings Inc.), the respective drill positions for root canal location were determined, and templates were virtually designed and 3D-printed. The template was positioned on the respective tooth, and a customized drill was used to penetrate the calcified part of the root canal and perform minimally invasive access cavity preparation up to the apical region. All root canals were rapidly and successfully located with the templates. At 1-year follow-up, clear signs of apical healing were present in all treated teeth. Conclusions In patients with dentin dysplasia, conventional endodontic therapy is challenging. GET considerably facilitates the root canal treatment of teeth affected by dentin dysplasia.
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Affiliation(s)
- Ralf Krug
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.
| | - Julian Volland
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Sebastian Reich
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Sebastian Soliman
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Thomas Connert
- Department of Periodontology, Endodontology and Cariology, University Centre for Dental Medicine, University of Basel, Mattenstraße 40, 4058, Basel, Switzerland
| | - Gabriel Krastl
- Department of Conservative Dentistry and Periodontology and Center of Dental Traumatology, University Hospital of Würzburg, Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
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Buchanan GD, Tredoux S, Nel C, Gamieldien MY. Endodontic treatment of dentin dysplasia type I D. AUST ENDOD J 2020; 47:343-349. [PMID: 32964546 DOI: 10.1111/aej.12444] [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: 03/31/2020] [Revised: 07/28/2020] [Accepted: 09/02/2020] [Indexed: 11/26/2022]
Abstract
Dentin dysplasia (DD) Type I is a developmental condition affecting dentin, inherited in an autosomal-dominant pattern or occurring due to a new mutation. Whilst the crowns of DD Type I affected teeth appear clinically normal, the roots are blunt and shortened. Pulp necrosis and periapical pathoses may be seen in the absence of obvious causes. Pulp stones and calcifications are frequently encountered. Endodontic management of DD may be challenging. A case of DD Type I, sub-classification d, in which spontaneous irreversible pulpitis developed on three mandibular incisors is documented. The case was managed by conventional endodontic treatment. Knowledge of this uncommon dental condition may assist dentists to adequately diagnose and manage these cases. Extraction should not be considered the first-line treatment option when sufficient root length is available to attempt endodontic treatment. Referral for medical evaluation is recommended to rule out systemic diseases which may mimic this condition.
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Affiliation(s)
- Glynn Dale Buchanan
- Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Sheree Tredoux
- Department of Odontology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Chane Nel
- Department of Oral Biology and Oral Pathology, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - Mohamed Yasin Gamieldien
- Department of Maxillofacial and Oral Surgery, School of Dentistry, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
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Vargo RJ, Reddy R, Da Costa WB, Mugayar LRF, Islam MN, Potluri A. Molar-incisor malformation: Eight new cases and a review of the literature. Int J Paediatr Dent 2020; 30:216-224. [PMID: 31677309 DOI: 10.1111/ipd.12592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/25/2019] [Accepted: 10/28/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Molar-incisor malformation (MIM) is a recently described dental abnormality. While MIM mimics dentin dysplasia, it presents in a localized pattern. Furthermore, it is speculated that MIM is caused by significant early-life medical history. AIM The purpose of this study is to present a series of MIM cases and compare the findings with the literature. DESIGN An extensive search of all published cases of MIM in the English-language literature was conducted. Additionally, an institutional review board-approved retrospective search was performed within the University of Florida oral pathology biopsy service archives. Radiographic consultation cases were also included. Cases lacking radiographs were excluded. RESULTS Seventy-nine cases were identified in the literature, and eight cases were identified in our retrospective search. All but one case involved the permanent first molars. The average age at diagnosis was 9 years. Many patients reported significant early-life medical histories. CONCLUSIONS MIM usually affects the permanent first molars and may be linked to early-life medical conditions or interventions. Oral healthcare providers, especially paediatric dentists, should be aware of MIM to avoid misdiagnosing it as dentin dysplasia. Long-term follow-up studies with thorough medical history documentation are essential to understand the pathogenesis and aetiology and to create treatment guidelines.
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Affiliation(s)
- Richard J Vargo
- Oral and Maxillofacial Pathology Specialty Care Unit, A.T. Still University - Missouri School of Dentistry & Oral Health, St. Louis, MO, USA
| | - Rekha Reddy
- Department of Oral and Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL, USA
| | - Walmir B Da Costa
- Department of Pediatric Dentistry, University of Florida College of Dentistry, Gainesville, FL, USA
| | - Leda R F Mugayar
- Department of Pediatric Dentistry, University of Florida College of Dentistry, Gainesville, FL, USA
| | - Mohammed N Islam
- Department of Oral and Maxillofacial Diagnostic Sciences, University of Florida College of Dentistry, Gainesville, FL, USA
| | - Anitha Potluri
- Department of Diagnostic Sciences, University of Pittsburgh, School of Dental Medicine, Pittsburgh, PA, USA
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Abstract
Molar root-incisor malformation (MRIM) or molar-incisor malformation (MIM) is a new type of dental anomaly characterized by dysplastic roots of permanent first molars, occasionally second primary molars, and the crowns of maxillary central incisors. MRIM involving permanent first molars and second primary molars is characterized by normal crowns with short, thin, and narrow roots, whereas MRIM involving permanent maxillary central incisors exhibits constrictions of the crown in the cervical area. In the first case, we extracted the affected first permanent molars at the optimal timing to minimize space deficiencies and induce space closure. In addition, composite resin restorations were performed on the anterior central incisors. In the second case, a mandibular lingual arch was used to stabilize the affected teeth in order to mitigate discomfort by reducing rotational biting forces.
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Midro AT, Stasiewicz-Jarocka B, Borys J, Hubert E, Skotnicka B, Hassmann-Poznańska E, Sierpińska T, Panasiuk B, Schanze D, Zenker M. Two unrelated families with variable expression of Fraser syndrome due to the same pathogenic variant in the FRAS1 gene. Am J Med Genet A 2020; 182:773-779. [PMID: 31999076 DOI: 10.1002/ajmg.a.61495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/29/2019] [Accepted: 01/03/2020] [Indexed: 11/08/2022]
Abstract
We report on two unrelated families of Polish origin with variable expression of Fraser syndrome (FS; MIM#219000) due to homozygosity for the same pathogenic variant, c.6963_6964dup, of FRAS1. In one family, the disorder presented with perinatal and prenatal lethality. One affected female from family 2 who was followed-up for 32 years, represented a relatively favorable long-term outcome. She displayed the typical craniofacial dysmorphism, including right cryptophthalmos, cutaneous syndactyly, abnormalities of the stomathognatic system, bilateral atresia of the external ear canals resulting in conductive hearing loss, and malformations of the larynx, spleen, kidney, and genitourinary tract. Her intellectual capacities were normal. Our observations illustrate that expression and severity of FS, even when caused by the same pathogenic variant, may be quite different ranging from a lethal disorder to a condition with multiple physical malformations but normal psychomotor development. In addition, we propose that the FRAS1 c.6963_6964dup variant may be a founder mutation in the Polish population. Therefore, it would be reasonable to test specifically for this variant first in any FS1 patient of Polish ancestry.
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Affiliation(s)
- Alina T Midro
- Department of Clinical Genetics, Medical University of Bialystok, Bialystok, Poland
| | | | - Jan Borys
- Department of Maxillo-Facial Surgery, Medical University of Bialystok, Bialystok, Poland
| | - Ewa Hubert
- Department of Maxillo-Facial Surgery, Medical University of Bialystok, Bialystok, Poland
| | - Bożena Skotnicka
- Paediatric Otolaryngology of Clinic, Medical University of Bialystok, Bialystok, Poland
| | | | - Teresa Sierpińska
- Department of Prosthetic Dentistry, Medical University of Bialystok, Bialystok, Poland
| | - Barbara Panasiuk
- Department of Clinical Genetics, Medical University of Bialystok, Bialystok, Poland
| | - Denny Schanze
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
| | - Martin Zenker
- Institute of Human Genetics, University Hospital Magdeburg, Magdeburg, Germany
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Ranjitkar S, Yong R, Wu IC, Gully G, Farmer D, Watson I, Heithersay G. Dentinal dysplasia type 1: A 3D micro-computed tomographic study of enamel, dentine and root canal morphology. AUST ENDOD J 2019; 45:298-304. [PMID: 31310441 DOI: 10.1111/aej.12359] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 04/18/2019] [Accepted: 05/20/2019] [Indexed: 12/18/2022]
Abstract
Dentine dysplasia type 1 is a rare and complex dental anomaly. Our aim was to conduct a morphometric assessment of a dentinal dysplasia type 1c (DD1c) caries-free mandibular second molar, extracted due to symptomatic apical periodontitis. Controls consisted of five intact mandibular second molars. Micro-computed tomography analysis showed that the DD1c volume % for enamel, dentine/cementum and pulp chamber fell in the 0.36th, 99.97th and 0.09th percentiles of the control teeth (P < 0.01). It also revealed an extremely complicated root canal system in the DD1c tooth with a varying degree of dentine mineralisation and aberrant dentine deposition in the pulp chamber. A crack extending from the external tooth surface to the pulp chamber was identified as a potential site for microbial invasion. Clinical implications include preventive measures and early intervention in reversible pulpitis. Conclusion: Micro-CT imaging can be useful in establishing post-extraction diagnosis of cracks and phenomic characterisation of tooth anomalies.
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Affiliation(s)
- Sarbin Ranjitkar
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Robin Yong
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - I-Cheng Wu
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
| | - Grant Gully
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Daniel Farmer
- Adelaide Endodontic Specialists, Adelaide, South Australia, Australia
| | - Ian Watson
- 7 Bartley Ave, Netherby, South Australia, Australia
| | - Geoffrey Heithersay
- Adelaide Dental School, The University of Adelaide, Adelaide, South Australia, Australia
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13
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Rashidian A, Zahraei SH, Hashemi SS. Developmental Disturbance of Dentin with Probable Diagnosis of Dentin Dysplasia Type 1d: A rare case report. JOURNAL OF RESEARCH IN DENTAL AND MAXILLOFACIAL SCIENCES 2019. [DOI: 10.29252/jrdms.4.2.37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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14
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Alhilou A, Beddis HP, Mighell AJ, Durey K. Dentin dysplasia: diagnostic challenges. BMJ Case Rep 2018; 2018:bcr-2017-223942. [PMID: 29895546 DOI: 10.1136/bcr-2017-223942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Dentin dysplasia(DD) is a rare autosomal dominant disorder associated with disturbance of the dentin. While the crowns appear clinically normal, on radiography, the pulp spaces appear partially or completely obliterated, with short blunted roots, and multiple periapical radiolucencies affecting the apparently sound teeth. Clinical signs include spontaneous abscess formation or increased tooth mobility which can lead to exfoliation. DD can therefore have a significant impact on the patient's dentition, and treatment is often challenging. Shields' classification of dentin disorders has been recently criticised for failing to consider differential variations and expressions of these disorders. This paper describes a case of a 23-year-old woman with previously undiagnosed DD, who presented with clinical and histological features belonging to several of these diseases, thus highlighting the potential diagnostic challenges faced with Shields' classification.
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Affiliation(s)
- Ahmed Alhilou
- Restorative Dentistry, Leeds Dental Institute, Leeds, West Yorkshire, UK
| | - Hannah P Beddis
- Restorative Dentistry, Leeds Dental Institute, Leeds, West Yorkshire, UK
| | | | - Kathryn Durey
- Restorative Dentistry, Leeds Dental Institute, Leeds, West Yorkshire, UK
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15
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Chen D, Li X, Lu F, Wang Y, Xiong F, Li Q. Dentin dysplasia type I-A dental disease with genetic heterogeneity. Oral Dis 2018; 25:439-446. [PMID: 29575674 PMCID: PMC7818184 DOI: 10.1111/odi.12861] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 02/26/2018] [Accepted: 03/04/2018] [Indexed: 12/12/2022]
Abstract
Hereditary dentin disorders include dentinogenesis imperfecta (DGI) and dentin dysplasia (DD), which are autosomal dominant diseases characterized by altered dentin structure such as abnormality in dentin mineralization and the absence of root dentin. Shields classified DGI into three subgroups and DD into two subtypes. Although they are all hereditary dentin diseases, they do not share the same causative genes. To date, the pathogenic genes of DGI type I, which is considered a clinical manifestation of syndrome osteogenesis imperfecta, include COL1A1 and COL1A2. Mutations of the DSPP gene, which encodes the dentin sialophosphoprotein, a major non-collagenous protein, are responsible for three isolated dentinal diseases: DGI-II, DGI-III, and DD-II. However, DD-I appears to be special in that researchers have found three pathogenicity genes-VPS4B, SSUH2, and SMOC2-in three affected families from different countries. It is believed that DD-I is a genetically heterogeneous disease and is distinguished from other types of dentin disorders. This review summarizes the DD-I literature in the context of clinical appearances, radiographic characteristics, and functions of its pathogenic genes and aims to serve clinicians in further understanding and diagnosing this disease.
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Affiliation(s)
- D Chen
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Li
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F Lu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y Wang
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F Xiong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Q Li
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Masood F, Benavides E. Alterations in Tooth Structure and Associated Systemic Conditions. Radiol Clin North Am 2017; 56:125-140. [PMID: 29157542 DOI: 10.1016/j.rcl.2017.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A variety of factors can affect the normal development of tissues and may lead to variation in the normal compliment of teeth and development of alterations in the shape and size of teeth. These anomalies can be congenital, developmental, or acquired. Dental anomalies can present as isolated traits or be associated with systemic conditions and syndromes for which early diagnosis and genetic testing may result in better treatment outcomes and quality of life. Dentists play an essential role in the multidisciplinary management of these abnormalities. This article discusses some of these tooth alterations and associated systemic and genetic conditions.
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Affiliation(s)
- Farah Masood
- Department Oral Diagnosis and Radiology, The University of Oklahoma, College of Dentistry, Office 286-A, 1201 North Stonewall Avenue, Oklahoma City, OK 73117, USA.
| | - Erika Benavides
- Department of Periodontics and Oral Medicine, The University of Michigan, School of Dentistry, Office 2029F, 1011 North University Avenue, Ann Arbor, MI 48109, USA
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17
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Xiong F, Ji Z, Liu Y, Zhang Y, Hu L, Yang Q, Qiu Q, Zhao L, Chen D, Tian Z, Shang X, Zhang L, Wei X, Liu C, Yu Q, Zhang M, Cheng J, Xiong J, Li D, Wu X, Yuan H, Zhang W, Xu X. Mutation in SSUH2 Causes Autosomal-Dominant Dentin Dysplasia Type I. Hum Mutat 2016; 38:95-104. [PMID: 27680507 DOI: 10.1002/humu.23130] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 09/24/2016] [Accepted: 09/26/2016] [Indexed: 11/08/2022]
Abstract
Dentin dysplasia type I (DDI) is an autosomal-dominant genetic disorder resulting from dentin defects. The molecular basis of DDI remains unclear. DDI exhibits unique characteristics with phenotypes featuring obliteration of pulp chambers and diminutive root, thus providing a useful model for understanding the genetics of tooth formation. Using a large Chinese family with 14 DDI patients, we mapped the gene locus responsible for DDI to 3p26.1-3p24.3 and further identified a missense mutation, c.353C>A (p.P118Q) in the SSUH2 gene on 3p26.1, which co-segregated with DDI. We showed that SSUH2 (p.P118Q) perturbed the structure and significantly reduced levels of mutant (MT) protein and mRNA compared with wild-type SSUH2. Furthermore, MT P141Q knock-in mice (+/- and -/-) had a unique partial obliteration of the pulp cavity and upregulation or downregulation of six major genes involved in odontogenesis: Dspp, Dmp1, Runx2, Pax9, Bmp2, and Dlx2. The phenotype of missing teeth was determined in zebrafish with morpholino gene knockdowns and rescued by injection of normal human mRNA. Taken together, our observations demonstrate that SSUH2 disrupts dental formation and that this novel gene, together with other odontogenesis genes, is involved in tooth development.
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Affiliation(s)
- Fu Xiong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Zhisong Ji
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yanhui Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.,Department of Prenatal Diagnosis Center, Maternal and Child Health Hospital, Dongguan, China
| | - Yu Zhang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Lingling Hu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Qi Yang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Qinwei Qiu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Lingfeng Zhao
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Dong Chen
- School of Stomatology, Zhengzhou University, Zhengzhou, China
| | - Zhihui Tian
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xuan Shang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Leitao Zhang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiaofeng Wei
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Cuixian Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Qiuxia Yu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Meichao Zhang
- Department of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Jing Cheng
- Center for Medical Genetics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jun Xiong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Dongri Li
- Department of Forensic Science, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xiuhua Wu
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Huijun Yuan
- Center for Medical Genetics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Wenqing Zhang
- Department of Developmental Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Xiangmin Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
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18
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Yang Q, Chen D, Xiong F, Chen D, Liu C, Liu Y, Yu Q, Xiong J, Liu J, Li K, Zhao L, Ye Y, Zhou H, Hu L, Tian Z, Shang X, Zhang L, Wei X, Zhou W, Li D, Zhang W, Xu X. A splicing mutation inVPS4Bcauses dentin dysplasia I. J Med Genet 2016; 53:624-33. [DOI: 10.1136/jmedgenet-2015-103619] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 04/08/2016] [Indexed: 12/22/2022]
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19
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Ye X, Li K, Liu L, Yu F, Xiong F, Fan Y, Xu X, Zuo C, Chen D. Dentin dysplasia type I-novel findings in deciduous and permanent teeth. BMC Oral Health 2015; 15:163. [PMID: 26693824 PMCID: PMC4689058 DOI: 10.1186/s12903-015-0149-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 12/09/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dentin dysplasia type I (DD-I) is a rare autosomal dominant hereditary disorder which seriously affects the root development of teeth, causing spontaneous tooth loss (in teenagers). At present, the study of DD-I focuses on familial and phenotypic analyses and reports regarding the ultrastructural study of DD-I are few. The purpose of this study was to clarify and discuss the clinical, histopathological, and ultrastructural features of the dentin defects in DD-I. In addition, the study further explores the root development and provides clues for uncovering virulent genes associated with the disease. METHODS We recruited 31 members of a four-generation Chinese family, including eleven with dentin defects. Four permanent teeth and four deciduous teeth were obtained from individuals affected by DD-I. At the same time, two caries-free like-numbered permanent teeth and deciduous teeth served as controls, respectively. Analyses of these teeth were carried out using stereomicroscopy, light microscopy, and scanning and transmission electron microscopy, respectively. RESULTS Similar to previous reports, extracted teeth showed typical histopathological and ultrastructural features of DD-I and teeth had short roots with obliterated pulp chambers. Furthermore, several novel discoveries were found in teeth affected by DD-I, including; (1) thinner dentin; (2) larger scalloped dentinoenamel junctions; (3) teardrop-shaped lacunae in the enamel; (4) rodless enamel and (5) irregular collagen fibers. CONCLUSIONS The results exhibited defined features of DD-I in the family and further confirmed that abnormal dentin structure affected both the deciduous and permanent dentitions. In addition, these findings may contribute to a better understanding of the pathogenesis of DD-I as well as aid in the subclassification of this disease.
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Affiliation(s)
- Xin Ye
- Department of Periodontics, School of Stomatology, Zhengzhou University, Zhengzhou, Henan, China.
| | - Kunyang Li
- Department of Stomatology, The Second Affiliated Hospital of Henan Traditional Chinese Medicine College, Zhengzhou, Henan, China.
| | - Ling Liu
- Department of Periodontics, School of Stomatology, Zhengzhou University, Zhengzhou, Henan, China.
| | - Fangfang Yu
- Department of Periodontics, School of Stomatology, Zhengzhou University, Zhengzhou, Henan, China.
| | - Fu Xiong
- Department of Medical Genetics, Southern Medical University, Guangzhou, China.
| | - Yun Fan
- Department of Periodontics, School of Stomatology, Zhengzhou University, Zhengzhou, Henan, China.
| | - Xiangmin Xu
- Department of Medical Genetics, Southern Medical University, Guangzhou, China.
| | - Chunran Zuo
- Department of Stomatology, The Second Affiliated Hospital of Henan Traditional Chinese Medicine College, Zhengzhou, Henan, China.
| | - Dong Chen
- Department of Periodontics, School of Stomatology, Zhengzhou University, Zhengzhou, Henan, China.
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20
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Vieira AR, Lee M, Vairo F, Loguercio Leite JC, Munerato MC, Visioli F, D'Ávila SR, Wang SK, Choi M, Simmer JP, Hu JCC. Root anomalies and dentin dysplasia in autosomal recessive hyperphosphatemic familial tumoral calcinosis (HFTC). Oral Surg Oral Med Oral Pathol Oral Radiol 2015; 120:e235-9. [PMID: 26337219 PMCID: PMC4640955 DOI: 10.1016/j.oooo.2015.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Revised: 04/30/2015] [Accepted: 05/11/2015] [Indexed: 01/17/2023]
Abstract
Hyperphosphatemic familial tumoral calcinosis (HFTC, OMIM #211900) is an autosomal recessive metabolic disorder characterized by hyperphosphatemia, tooth root defects, and the progressive deposition of calcium phosphate crystals in periarticular spaces, soft tissues, and sometimes bone.(1) In this HFTC case report, we document the dental phenotype associated with a homozygous missense mutation (g.29077 C>T; c.484 C>T; p.Arg162*) in GALNT3 (OMIM 6017563), a gene encoding UDP-GalNAc transferase 3 that catalyzes the first step of O-linked oligosaccharide biosynthesis in the Golgi. The medical and dental pathology is believed to be caused primarily by high serum phosphate levels (hyperphosphatemia), which, in turn, is caused by failure of GALNT3 to glycosylate the phosphate regulator protein FGF23, impairing its ability inhibit reabsorption of filtered phosphate in the kidneys.
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Affiliation(s)
- Alexandre R Vieira
- Departments of Oral Biology and Pediatric Dentistry, Center for Craniofacial and Dental Genetics, School of Dental Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA; Department of Human Genetics, Graduate School of Public Health; Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Moses Lee
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Filippo Vairo
- Medical Genetics Service, Hospital de Clínicas de Porto Alegre, RS, Brazil
| | | | - Maria Cristina Munerato
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, RS, Brazil
| | - Fernanda Visioli
- Department of Oral Pathology, School of Dentistry, Universidade Federal do Rio Grande do Sul, RS, Brazil
| | | | - Shih-Kai Wang
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Murim Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.
| | - James P Simmer
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
| | - Jan C-C Hu
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, Michigan, USA
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21
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Abstract
The most common root malformations in humans arise from either developmental disorders of the root alone or disorders of radicular development as part of a general tooth dysplasia. The aim of this review is to relate the characteristics of these root malformations to potentially disrupted processes involved in radicular morphogenesis. Radicular morphogenesis proceeds under the control of Hertwig's epithelial root sheath (HERS) which determines the number, length, and shape of the root, induces the formation of radicular dentin, and participates in the development of root cementum. Formation of HERS at the transition from crown to root development appears to be very insensitive to adverse effects, with the result that rootless teeth are extremely rare. In contrast, shortened roots as a consequence of impaired or prematurely halted apical growth of HERS constitute the most prevalent radicular dysplasia which occurs due to trauma and unknown reasons as well as in association with dentin disorders. While odontoblast differentiation inevitably stops when growth of HERS is arrested, it seems to be unaffected even in cases of severe dentin dysplasias such as regional odontodysplasia and dentin dysplasia type I. As a result radicular dentin formation is at least initiated and progresses for a limited time. The only condition affecting cementogenesis is hypophosphatasia which disrupts the formation of acellular cementum through an inhibition of mineralization. A process particularly susceptible to adverse effects appears to be the formation of the furcation in multirooted teeth. Impairment or disruption of this process entails taurodontism, single-rooted posterior teeth, and misshapen furcations. Thus, even though many characteristics of human root malformations can be related to disorders of specific processes involved in radicular morphogenesis, precise inferences as to the pathogenesis of these dysplasias are hampered by the still limited knowledge on root formation.
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Affiliation(s)
- Hans U Luder
- Center of Dental Medicine, Institute of Oral Biology, University of Zurich Zurich, Switzerland
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22
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Microscopic analysis of molar--incisor malformation. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 119:544-52. [PMID: 25544405 DOI: 10.1016/j.oooo.2014.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 10/10/2014] [Accepted: 10/19/2014] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Molar-incisor malformation (MIM) is a newly discovered type of dental anomaly that involves a characteristic root malformation of the permanent first molars. The aim of this study was to reveal the microstructure of MIM teeth in order to determine their origin. STUDY DESIGN Four MIM teeth were extracted from a 9-year-old girl due to severe mobility. The detailed microstructure of the teeth was determined by examinations with micro-computed tomography (micro-CT), hematoxylin and eosin (H&E) staining, immunohistochemical staining, and scanning electron microscopy to reveal the detailed microstructure. RESULTS Micro-CT and H&E staining revealed the pulpal floor comprising three layers: upper, middle, and lower. Amorphous hard tissues and hyperactive cells were observed in the middle layer of the pulpal floor, and the cells stained positively for dentin sialoprotein and osteocalcin, but not for collagen XII. CONCLUSION The results of the present study imply that MIM-affected molars probably result from inappropriate differentiation of the apical pulp and dental follicle.
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Khandelwal S, Gupta D, Likhyani L. A Case of Dentin Dysplasia with Full Mouth Rehabilitation: A 3-year Longitudinal Study. Int J Clin Pediatr Dent 2014; 7:119-24. [PMID: 25356011 PMCID: PMC4212168 DOI: 10.5005/jp-journals-10005-1248] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 01/02/2014] [Indexed: 11/23/2022] Open
Abstract
Dentin dysplasia, a rare hereditary disorder of dentin formation, is characterized by normal enamel but atypical dentin formation along with abnormal pulpal morphology. It is inherited as an autosomal dominant trait. It has been divided into two clinical entities: type I (radicular) and type II (coronal). Early diagnosis and initiation of effective regular dental treatments may help the patients with this condition to delay or prevent the loss of the entire dentition and help them in cope up with edentulous state in early ages. The condition undoubtedly has a negative impact on the physical and psychological well-being of the affected individual. Numerous factors have to be considered during the prosthetic rehabilitation of patients with dentin dysplasia. Treatment protocol varies according to clinical case. Although literature reports suggest general guidelines for treatment planning, the present case report describes a full mouth rehabilitation of an 8-year-old female patient with dentin dysplasia. How to cite this article: Khandelwal S, Gupta D, Likhyani L. A Case of Dentin Dysplasia with Full Mouth Rehabilitation: A 3-year Longitudinal Study. Int J Clin Pediatr Dent 2014;7(2): 119-124.
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Affiliation(s)
- Suneet Khandelwal
- Reader, Department of Oral Pathology and Microbiology, Dr BR Ambedkar Dental College, Patna, Bihar, India
| | - Dheeraj Gupta
- Reader, Department of Prosthodontics, Rajasthan Dental College Jaipur, Rajasthan, India
| | - Lalit Likhyani
- Assitant Professor, Department of Conservative Dentistry, Government Dental College, Jaipur, Rajasthan, India
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de La Dure-Molla M, Philippe Fournier B, Berdal A. Isolated dentinogenesis imperfecta and dentin dysplasia: revision of the classification. Eur J Hum Genet 2014; 23:445-51. [PMID: 25118030 DOI: 10.1038/ejhg.2014.159] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Revised: 07/08/2014] [Accepted: 07/10/2014] [Indexed: 11/09/2022] Open
Abstract
Dentinogenesis imperfecta is an autosomal dominant disease characterized by severe hypomineralization of dentin and altered dentin structure. Dentin extra cellular matrix is composed of 90% of collagen type I and 10% of non-collagenous proteins among which dentin sialoprotein (DSP), dentin glycoprotein (DGP) and dentin phosphoprotein (DPP) are crucial in dentinogenesis. These proteins are encoded by a single gene: dentin sialophosphoprotein (DSPP) and undergo several post-translational modifications such as glycosylation and phosphorylation to contribute and to control mineralization. Human mutations of this DSPP gene are responsible for three isolated dentinal diseases classified by Shield in 1973: type II and III dentinogenesis imperfecta and type II dentin dysplasia. Shield classification was based on clinical phenotypes observed in patient. Genetics results show now that these three diseases are a severity variation of the same pathology. So this review aims to revise and to propose a new classification of the isolated forms of DI to simplify diagnosis for practitioners.
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Affiliation(s)
- Muriel de La Dure-Molla
- 1] Centre de Recherche des Cordeliers, INSERM UMRS 872, Laboratory of Molecular Oral Pathophysiology, Paris, France [2] Paris-Descartes University, Paris, France [3] The Pierre-and-Marie-Curie University, Paris, France [4] Paris-Diderot, School of Dentistry, Paris, France [5] Reference Center for Dental Rare Disease, MAFACE Rothschild Hospital, AP-HP, Paris, France
| | - Benjamin Philippe Fournier
- 1] Centre de Recherche des Cordeliers, INSERM UMRS 872, Laboratory of Molecular Oral Pathophysiology, Paris, France [2] Paris-Descartes University, Paris, France [3] The Pierre-and-Marie-Curie University, Paris, France [4] Paris-Diderot, School of Dentistry, Paris, France [5] Reference Center for Dental Rare Disease, MAFACE Rothschild Hospital, AP-HP, Paris, France
| | - Ariane Berdal
- 1] Centre de Recherche des Cordeliers, INSERM UMRS 872, Laboratory of Molecular Oral Pathophysiology, Paris, France [2] Paris-Descartes University, Paris, France [3] The Pierre-and-Marie-Curie University, Paris, France [4] Paris-Diderot, School of Dentistry, Paris, France [5] Reference Center for Dental Rare Disease, MAFACE Rothschild Hospital, AP-HP, Paris, France
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Lee HS, Kim SH, Kim SO, Lee JH, Choi HJ, Jung HS, Song JS. A new type of dental anomaly: molar-incisor malformation (MIM). Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 118:101-109.e3. [DOI: 10.1016/j.oooo.2014.03.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 03/07/2014] [Accepted: 03/12/2014] [Indexed: 10/25/2022]
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Root malformation associated with a cervical mineralized diaphragm – a distinct form of tooth abnormality? Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 117:e311-9. [DOI: 10.1016/j.oooo.2013.06.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 06/12/2013] [Accepted: 06/25/2013] [Indexed: 01/24/2023]
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27
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Lam EW. Dental Anomalies. Oral Radiol 2014. [DOI: 10.1016/b978-0-323-09633-1.00031-6] [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]
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Typical radiographic findings of dentin dysplasia type 1b with dental fluorosis. Case Rep Dent 2013; 2013:902861. [PMID: 24367729 PMCID: PMC3866844 DOI: 10.1155/2013/902861] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 10/27/2013] [Indexed: 11/17/2022] Open
Abstract
Dentin dysplasia is a rare inherited autosomal dominant disorder characterized by rootless teeth. We hereby report a case of dentin dysplasia type 1b with typical radiographic findings: short and blunt roots, pulpal obliteration, horizontal/crescent shaped radiolucencies in pulp chambers, and multiple periapical radiolucencies. However, the present case did not show the autosomal dominant pattern of inheritance and the patient also exhibited concurrent dental fluorosis, transposition of 13 and 14, and multiple cusps in maxillary first molars. Moreover, on careful review of previously documented cases of radiographs of dentin dysplasia, the horizontal/crescent shaped radiolucencies in pulp chambers are a rare finding, which is characteristically seen in the present case.
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Bespalez-Filho R, Couto SDAB, Souza PHC, Westphalen FH, Jacobs R, Willems G, Tanaka OM. Orthodontic treatment of a patient with dentin dysplasia type I. Am J Orthod Dentofacial Orthop 2013; 143:421-5. [PMID: 23452977 DOI: 10.1016/j.ajodo.2012.01.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 01/01/2012] [Accepted: 01/01/2012] [Indexed: 10/27/2022]
Abstract
Dentin dysplasia is a genetic disorder of the teeth that affects the dentin and the pulp. Type I is sometimes called "rootless teeth," because of the loss of organization of the root dentin, which often leads to a shortened root length. The purpose of this article was to present a rare clinical case of a girl who was diagnosed with dentin dysplasia type I when she was referred for an orthodontic evaluation. Panoramic and periapical radiographs showed defective root formation and areas with periapical radiolucencies in several teeth. Her Angle Class I malocclusion was successfully treated, providing esthetic and functional results, without clinical symptoms or signs of periodontitis or odontogenic infections.
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30
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Li L, Shu Y, Lou B, Wu H. Candidate-gene exclusion in a family with inherited non-syndromic dental disorders. Gene 2012; 511:420-6. [PMID: 23018043 DOI: 10.1016/j.gene.2012.09.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Revised: 08/15/2012] [Accepted: 09/12/2012] [Indexed: 01/06/2023]
Abstract
OBJECTIVES Amelogenesis imperfecta, dentinogenesis imperfecta, and dentin dysplasia are the most common non-syndromic dental disorders. In this study, we analysed and localised the gene(s) responsible for inherited non-syndromic dental disorders in a Chinese family. METHODS This study identified and researched non-syndromic dental disorders in a four-generation Chinese family, including four affected individuals whose clinical phenotype was atypical. Linkage analysis with seven polymorphic markers that localise to six different autochromosomes showed that the family was linked through chromosome 4q. All exons and exon-intron boundaries of dentin sialophosphoprotein (DSPP), enamelin (ENAM), and ameloblastin (AMBN), which are located on chromosome 4q, were sequenced in nine of the family members. RESULTS Direct DNA sequence analysis revealed the existence of a G to A transversion in exon 4 (g.13081786G>A, c.727G>A, p.Asp243Asn, based on reference sequences NM_014208.3) of the DSPP gene, and this sequence variation correlated exactly with the presence of the disease. CONCLUSION These results indicate that mutation p.Asp243Asn is a highly probable cause of non-syndromic dental disorder in this Chinese family. The presence of symptom heterogeneity is possible, as the clinical classification system is hampered by the lack of close correlation between the subtype and the molecular defect.
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Affiliation(s)
- Li Li
- West China College of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
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32
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Sekerci AE, Sahman H, Etoz OA, Gumus HO, Albayrak H, Nazlim S, Sisman Y. Dentin dysplasia type I—report of a case treated with dental implants. Indian J Dent 2011. [DOI: 10.1016/s0975-962x(11)60038-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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33
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Rocha CT, Nelson-Filho P, Silva LABD, Assed S, Queiroz AMD. Variation of dentin dysplasia type I: report of atypical findings in the permanent dentition. Braz Dent J 2011; 22:74-8. [PMID: 21519653 DOI: 10.1590/s0103-64402011000100013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Dentin dysplasia is a rare defect of dentin development with an autosomal dominant pattern of inheritance, which is generally divided into 2 main classes based on the clinical and radiographic appearance of the affected dental tissues: type I, which affects the root portion and type II, which affects the coronal portion of the tooth. This paper reports the case of a child aged 10 years and 8 months with both classic and atypical features of dentin dysplasia type I in the permanent dentition. Only few mandibular teeth were affected and presented clinically normal appearing crowns, moderate to severe mobility, short, blunt or almost absent roots. However, no evidence of pulp chamber obliteration or periapical radiolucencies was found. The clinical and radiographic characteristics observed in this patient are different from those reported in the literature, which suggests that this may be a variation of dentin dysplasia type I expression.
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Affiliation(s)
- Cristiane Tomaz Rocha
- Department of Pediatric Clinic, Preventive and Community Dentistry, Ribeirão Preto Dental School, University of São Paulo, SP, Brazil
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Donta C, Kavvadia K, Panopoulos P, Douzgou S. Generalized pulp stones: report of a case with 6-year follow-up. Int Endod J 2011; 44:976-82. [PMID: 21718334 DOI: 10.1111/j.1365-2591.2011.01903.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To present a mildly mentally retarded patient with generalized pulp stone formation and the six-year follow-up and to discuss the differential diagnosis of the case. SUMMARY Pulp stones were radiographically detected in the pulp chamber of all permanent teeth in a 25-year-old woman with mild mental retardation who presented for endodontic treatment on tooth no 11 (FDI). The patient's medical, dental and family history was noncontributory. The pulp stone in the pulp chamber of tooth no 11 was removed during canal filing, and root canal treatment completed uneventfully. Six years later, the patient was re-evaluated and the pulp stones were unchanged radiographically. The patient's family history, facial phenotype and karyotype as well as the radiographic, laboratory and physical examination were not consistent with any of the known genetic syndromes associated with generalized pulp stones. Molecular analysis for the DSPP gene proved negative. The aetiology of this case remains unknown. KEY POINTS Generalized pulp stones occur rarely; Such patients should be referred for genetic evaluation because pulp stones are mostly associated with genetic dentine defects; Pulp stones may hinder root canal treatment; Pulp stones may remain unchanged overtime.
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Affiliation(s)
- C Donta
- Department of Oral Diagnosis and Radiology, School of Dentistry, University of Athens, Athens, Greece
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Bauss O, Neter D, Rahman A. Prevalence of pulp calcifications in patients with Marfan syndrome. ACTA ACUST UNITED AC 2008; 106:e56-61. [DOI: 10.1016/j.tripleo.2008.06.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2008] [Revised: 06/29/2008] [Accepted: 06/30/2008] [Indexed: 10/21/2022]
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Barron MJ, McDonnell ST, Mackie I, Dixon MJ. Hereditary dentine disorders: dentinogenesis imperfecta and dentine dysplasia. Orphanet J Rare Dis 2008; 3:31. [PMID: 19021896 PMCID: PMC2600777 DOI: 10.1186/1750-1172-3-31] [Citation(s) in RCA: 122] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2008] [Accepted: 11/20/2008] [Indexed: 01/19/2023] Open
Abstract
The hereditary dentine disorders, dentinogenesis imperfecta (DGI) and dentine dysplasia (DD), comprise a group of autosomal dominant genetic conditions characterised by abnormal dentine structure affecting either the primary or both the primary and secondary dentitions. DGI is reported to have an incidence of 1 in 6,000 to 1 in 8,000, whereas that of DD type 1 is 1 in 100,000. Clinically, the teeth are discoloured and show structural defects such as bulbous crowns and small pulp chambers radiographically. The underlying defect of mineralisation often results in shearing of the overlying enamel leaving exposed weakened dentine which is prone to wear. Currently, three sub-types of DGI and two sub-types of DD are recognised but this categorisation may change when other causative mutations are found. DGI type I is inherited with osteogenesis imperfecta and recent genetic studies have shown that mutations in the genes encoding collagen type 1, COL1A1 and COL1A2, underlie this condition. All other forms of DGI and DD, except DD-1, appear to result from mutations in the gene encoding dentine sialophosphoprotein (DSPP), suggesting that these conditions are allelic. Diagnosis is based on family history, pedigree construction and detailed clinical examination, while genetic diagnosis may become useful in the future once sufficient disease-causing mutations have been discovered. Differential diagnoses include hypocalcified forms of amelogenesis imperfecta, congenital erythropoietic porphyria, conditions leading to early tooth loss (Kostmann's disease, cyclic neutropenia, Chediak-Hegashi syndrome, histiocytosis X, Papillon-Lefevre syndrome), permanent teeth discolouration due to tetracyclines, Vitamin D-dependent and vitamin D-resistant rickets. Treatment involves removal of sources of infection or pain, improvement of aesthetics and protection of the posterior teeth from wear. Beginning in infancy, treatment usually continues into adulthood with a number of options including the use of crowns, over-dentures and dental implants depending on the age of the patient and the condition of the dentition. Where diagnosis occurs early in life and treatment follows the outlined recommendations, good aesthetics and function can be obtained.
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Affiliation(s)
- Martin J Barron
- Faculty of Life Sciences and Dental School, Michael Smith Building, University of Manchester, Oxford Road, Manchester, M13 9PT, UK.
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37
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Bailleul-Forestier I, Molla M, Verloes A, Berdal A. The genetic basis of inherited anomalies of the teeth. Eur J Med Genet 2008; 51:273-91. [PMID: 18499550 DOI: 10.1016/j.ejmg.2008.02.009] [Citation(s) in RCA: 98] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2007] [Accepted: 02/03/2008] [Indexed: 01/10/2023]
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38
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The genetic basis of inherited anomalies of the teeth. Part 2: syndromes with significant dental involvement. Eur J Med Genet 2008; 51:383-408. [PMID: 18599376 DOI: 10.1016/j.ejmg.2008.05.003] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Accepted: 05/02/2008] [Indexed: 12/20/2022]
Abstract
Teeth are specialized structural components of the craniofacial skeleton. Developmental defects occur either alone or in combination with other birth defects. In this paper, we review the dental anomalies in several multiple congenital anomaly (MCA) syndromes, in which the dental component is pivotal in the recognition of the phenotype and/or the molecular basis of the disorder is known. We will consider successively syndromic forms of amelogenesis imperfecta or enamel defects, dentinogenesis imperfecta (i.e. osteogenesis imperfecta) and other dentine anomalies. Focusing on dental aspects, we will review a selection of MCA syndromes associated with teeth number and/or shape anomalies. A better knowledge of the dental phenotype may contribute to an earlier diagnosis of some MCA syndromes involving teeth anomalies. They may serve as a diagnostic indicator or help confirm a syndrome diagnosis.
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Depprich RA, Ommerborn MA, Handschel JGK, Naujoks CD, Meyer U, Kübler NR. Dentin dysplasia type I: a challenge for treatment with dental implants. Head Face Med 2007; 3:31. [PMID: 17714586 PMCID: PMC1995192 DOI: 10.1186/1746-160x-3-31] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2007] [Accepted: 08/22/2007] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dentin dysplasia type I is characterized by a defect of dentin development with clinical normal appearance of the permanent teeth but no or only rudimentary root formation. Early loss of all teeth and concomitant underdevelopment of the jaws are challenging for successful treatment with dental implants. METHODS A combination of sinus lifting and onlay bone augmentation based on treatment planning using stereolithographic templates was used in a patient with dentin dysplasia type I to rehabilitate the masticatory function. RESULTS (i) a predisposition for an increased and accelerated bone resorption was observed in our patient, (ii) bone augmentation was successful using a mixture of allogenic graft material with autogenous bone preventing fast bone resorption, (iii) surgical planning, based on stereolithographic models and surgical templates, facilitated the accurate placement of dental implants. CONCLUSION Bony augmentation and elaborate treatment planning is helpful for oral rehabilitation of patients with dentin dysplasia type I.
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Affiliation(s)
- Rita A Depprich
- Department for Cranio- and Maxillofacial Surgery, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Michelle A Ommerborn
- Department for Operative and Preventive Dentistry and Endodontics, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Jörg GK Handschel
- Department for Cranio- and Maxillofacial Surgery, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Christian D Naujoks
- Department for Cranio- and Maxillofacial Surgery, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Ulrich Meyer
- Department for Cranio- and Maxillofacial Surgery, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
| | - Norbert R Kübler
- Department for Cranio- and Maxillofacial Surgery, Heinrich-Heine-University Düsseldorf, Moorenstr. 5, 40225 Düsseldorf, Germany
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40
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Radiographic study of dentinal dysplasia in an orthodontic patient. Oral Radiol 2006. [DOI: 10.1007/bf02493292] [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]
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41
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Desai RS, Vanaki SS, Puranik RS, Rashmi GS, Nidawani P. An unusual combination of idiopathic generalized short-root anomaly associated with microdontia, taurodontia, multiple dens invaginatus, obliterated pulp chambers and infected cyst: a case report. J Oral Pathol Med 2006; 35:407-9. [PMID: 16827843 DOI: 10.1111/j.1600-0714.2006.00418.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Generalized diminished root formation is a rare condition leading to early loss of teeth. This report describes an unusual case of generalized short roots associated with microdontia, taurodontism of posterior teeth, and multiple dens invaginatus along with short stature in a 20-year-old man, who had lost several teeth because of spontaneous exfoliation.
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Affiliation(s)
- Rajiv S Desai
- Department of Oral Pathology, P.M.N.M. Dental College and Hospital, Bagalkot, India.
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42
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Parekh S, Kyriazidou A, Bloch-Zupan A, Roberts G. Multiple pulp stones and shortened roots of unknown etiology. ACTA ACUST UNITED AC 2006; 101:e139-42. [PMID: 16731378 DOI: 10.1016/j.tripleo.2005.11.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2004] [Revised: 10/28/2005] [Accepted: 11/04/2005] [Indexed: 11/24/2022]
Abstract
An unusual case of generalised pulpal calcifications (pulp stones) with normal clinical crowns is reported in a 13-year-old boy. Radiographic examination revealed pulp stones in the single rooted and premolar teeth, situated at the midroot level, with the roots bulging around them. The apical portion of the roots, periodontal ligament space, and surrounding bone had a normal radiographic appearance, apart from the upper premolars, and no periapical pathology was discernible. The upper premolars exhibited considerably shortened roots. No medical, dental, or family history was found to be contributory. Reviewing the literature revealed similar cases, but with differing diagnoses including dentine dysplasia (DD) or idiopathic cases. This report suggests either a variation of DD or possibly a new nonsyndromic dentine defect, and highlights the difficulties in establishing a definitive diagnosis by traditional methods. The recent discovery that mutation of the bicistronic dentine sialophosphoprotein gene (DSPP) is involved in DD may provide solutions to this problem.
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Affiliation(s)
- Susan Parekh
- Unite of Paediatric Dentistry, UCL Eastman Dental Institute, London, England, UK.
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43
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Abstract
In recent years, substantial progress has been made regarding the molecular etiology of human structural tooth diseases that alter dentin matrix formation. These diseases have been classified into two major groups with subtypes: dentin dysplasia (DD) types I and II and dentinogenesis imperfecta (DGI) types I-III. Genetic linkage studies have identified the critical loci for DD-II, DGI-II, and DGI-II to human chromosome 4q21. Located within the common disease loci for these diseases is cluster of dentin/bone genes that includes osteopontin (OPN), bone sialoprotein (BSP), matrix extracellular phosphoglycoprotein (MEPE), dentin matrix protein 1 (DMP1), and dentin sialophosphoprotein (DSPP). To date, only mutations within dentin sialophosphoprotein have been associated with the pathogenesis of dentin diseases including DGI types-II and -III and DD-II. In this article, we overview the recent literature related to these dentin genetic diseases, their clinical features, and molecular pathogenesis.
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Affiliation(s)
- Mary MacDougall
- Department of Oral Maxillofacial Surgery, Institute of Oral Health Research, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama 35294-0007, USA.
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44
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Ozer L, Karasu H, Aras K, Tokman B, Ersoy E. Dentin dysplasia type I: report of atypical cases in the permanent and mixed dentitions. ACTA ACUST UNITED AC 2004; 98:85-90. [PMID: 15243476 DOI: 10.1016/j.tripleo.2004.01.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Dentin dysplasia type I is a rare hereditary disturbance of dentin formation characterized clinically by nearly normal appearing crowns and severe hypermobility of teeth. Radiographic analysis shows obliteration of all pulp chambers, short, blunted, and malformed roots, and periapical radiolucencies of noncarious teeth. This paper presents 2 cases demonstrating both classic and atypical features of type I dentin dysplasia in the mixed and permanent dentitions. The clinical, radiographic, and histopathologic\findings of this condition and treatment are described.
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Affiliation(s)
- Levent Ozer
- Department of Pedodontics, Faculty of Dentistry, University of Ankara, -6500 Besevler, Ankara, Turkey.
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45
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Comer TL, Gound TG. Hereditary pattern for dentinal dysplasia type Id: a case report. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 2002; 94:51-3. [PMID: 12193893 DOI: 10.1067/moe.2002.121151] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Generalized pulpal calcifications arouse suspicion of diseases or conditions of systemic or hereditary origin. This case report describes a 45-year-old patient with generalized pulpal calcifications and bulging of the roots in areas corresponding to the pulp chambers in otherwise normal teeth. Similar findings were present in the patient's daughters and brother. This pattern of pulpal calcifications is consistent with the hereditary condition of dentinal dysplasia type Id.
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Affiliation(s)
- Toby L Comer
- College of Dentistry, University of Nebraska, 40th and Holdrege, Lincoln, NE 68583-0757, USA
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46
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Colquhoun AN, Ferguson MM, Doyle TC. Hemifacial atrophy with bilateral short roots. Br J Oral Maxillofac Surg 2000; 38:533-6. [PMID: 11010789 DOI: 10.1054/bjom.2000.0461] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We present a case in which the patient had both bilateral shortening of the roots, and hemifacial atrophy. As far as we know, this combination has not been described before.
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Affiliation(s)
- A N Colquhoun
- Department of Stomatology, University of Otago, Dunedin, New Zealand
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47
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Brenneise CV, Conway KR. Dentin dysplasia, type II: report of 2 new families and review of the literature. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1999; 87:752-5. [PMID: 10397672 DOI: 10.1016/s1079-2104(99)70175-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Dentin dysplasia, type II, is an inherited autosomal dominant disorder in which primary teeth are amber and translucent, with pulp chambers obliterated by abnormal dentin. The permanent teeth have a normal coronal morphologic character and coloration but exhibit "thistle tube"-shaped pulp chambers as well as numerous pulpal calcifications. The disorder has traditionally been thought to be somewhat rare; however, this article presents 2 new families in which several generations with the disorder were reported to the authors within a 1-year period. It also includes a review of the literature documenting a total of 17 previously reported families.
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Affiliation(s)
- C V Brenneise
- Department of Oral Diagnosis and Radiology, School of Dentistry, Creighton University, Omaha, Nebraska 68178, USA
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48
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VanDenBerghe JM, Panther B, Gound TG. Pulp stones throughout the dentition of monozygotic twins: a case report. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1999; 87:749-51. [PMID: 10397671 DOI: 10.1016/s1079-2104(99)70174-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pulpal calcifications are relatively common. However, their occurrence in the entire dentition is relatively infrequent. The presence of such calcification arouses suspicion of systemic or hereditary origin. This case report describes twin sisters with pulpal calcifications in their entire dentitions. No systemic cause was detected. The pattern of calcification was partially consistent with the hereditary condition of dentinal dysplasia.
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Affiliation(s)
- J M VanDenBerghe
- College of Dentistry, University of Nebraska Medical Center, Lincoln, USA
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49
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Kalk WW, Batenburg RH, Vissink A. Dentin dysplasia type I: five cases within one family. ORAL SURGERY, ORAL MEDICINE, ORAL PATHOLOGY, ORAL RADIOLOGY, AND ENDODONTICS 1998; 86:175-8. [PMID: 9720092 DOI: 10.1016/s1079-2104(98)90121-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Five cases of dentin dysplasia type I within one family are described. Clinically and radiologically, such patients are characterized by a delayed eruption pattern, opacity of the incisional margins, hypermobility of the teeth, short and defective roots, and obliterated pulp chambers. A conservative attitude toward the treatment of common conditions in dentin dysplasia type I favors the preservation of a vulnerable dentition.
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Affiliation(s)
- W W Kalk
- Department of Oral and Maxillofacial Surgery, University Hospital, Groningen, The Netherlands
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50
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O Carroll MK, Duncan WK. Dentin dysplasia type I. Radiologic and genetic perspectives in a six-generation family. ORAL SURGERY, ORAL MEDICINE, AND ORAL PATHOLOGY 1994; 78:375-81. [PMID: 7970601 DOI: 10.1016/0030-4220(94)90071-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
This is a report of a kindred of at least 181 members, of whom 35 exhibit or are reported to have dentin dysplasia type I. Six others are suspected of having the condition. Radiographic evidence that included obliterated or semilunar pulp chambers and short or undeveloped roots confirmed the diagnosis in 18 persons. The autosomal dominant mode of inheritance has been confirmed. One hundred percent penetrance has been demonstrated. There were insufficient data to determine the degree of expressivity.
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Affiliation(s)
- M K O Carroll
- Department of Diagnostic Sciences, School of Dentistry, University of Mississippi Medical Center, Jackson
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