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Palomino-Zorrilla JJ, Córdova-Limaylla NE, Rosas-Díaz JC, Cayo-Rojas CF, Cervantes-Ganoza LA, Guerrero ME. Jawbone quality classification in dental implant planning and placement studies. A scoping review. J Int Soc Prev Community Dent 2024; 14:89-97. [PMID: 38827351 PMCID: PMC11141890 DOI: 10.4103/jispcd.jispcd_4_22] [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: 01/03/2022] [Revised: 03/30/2022] [Accepted: 04/04/2022] [Indexed: 06/04/2024] Open
Abstract
Aim Cone beam computed tomography has become an attractive method for implant planning. However, in most cases, not all the information is taken advantage of and often the radiographic evaluation of bone quality is based on subjective assessment by the individual clinician. Therefore, the aim of this study was to examine classifications of bone tissue characteristics and methods for assessing them in dental implant planning and placement studies. Materials and Methods Three databases (Pubmed, Scopus, Web of Science) were searched using specific index terms: "Bone quality, bone quantity, bone density, cone-beam CT and cone-beam computed tomography". Three reviewers selected titles and analyzed abstracts according to inclusion and exclusion criteria. Some descriptions of bone tissue characteristics (bone quality, density, and quantity) used before or during dental implant placement were selected and categorized. Results The search yielded 442 titles. A total of 32 articles were selected and read in full text. Seventeen articles were considered relevant. Different classification systems were found to evaluate bone tissue characteristics as well as different examination protocols. Thirteen publications included in this review reported on bone quality and quantity using the Lekholm and Zarb classification. However, only four studies implemented and/or proposed modifications of the Lekholm and Zarb system. Four other publications described bone quality according to different classification systems such as Misch, University of California Los Angeles (UCLA), or Trisi and Rao. The assessment methods were often briefly described (or not described at all in one publication). Of the articles analyzed, five presented observer performance, whereas three presented diagnostic accuracy of the assessment method. Conclusion Currently, there are different classification systems applied to dental implant planning and placement, particularly regarding whether bone quality or quantity affects treatment outcomes. However, most authors have not validated the diagnostic accuracy and reproducibility of the classification used. Therefore, it is necessary to develop a classification system consistent with characteristics of bone tissue, taking into consideration an adequate description of bone tissue assessment methods, their diagnostic accuracy, and observer performance.
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Affiliation(s)
| | | | - José C Rosas-Díaz
- School of Stomatology, Universidad Privada San Juan Bautista, Lima, Peru
| | - César F Cayo-Rojas
- School of Stomatology, Universidad Privada San Juan Bautista, Lima, Peru
| | | | - Maria E Guerrero
- Faculty of Dentistry, Department of Medico Surgical Stomatology, Universidad Nacional Mayor de San Marcos, Lima, Peru
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2
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Rosa C, Bento V, Duarte N, Sayeg J, Santos T, Pellizzer E. Do dental implants installed in different types of bone (I, II, III, IV) have different success rates? A systematic review and meta-analysis. Saudi Dent J 2024; 36:428-442. [PMID: 38525185 PMCID: PMC10960139 DOI: 10.1016/j.sdentj.2023.12.007] [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: 05/07/2023] [Revised: 11/11/2023] [Accepted: 12/18/2023] [Indexed: 03/26/2024] Open
Abstract
Purpose The objective of this systematic review and meta-analysis was to evaluate the survival rate of implants installed in bone type IV (Lekholm and Zarb, 1995) compared to that of implants installed in bone types I, II, and III. Material and methods This review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PRISMA) and was registered in the PROSPERO International Database of Systematic Reviews (CRD42021229775). The PubMed/MEDLINE, Scopus, and Cochrane databases were searched through July 2021. The PICO question was: "Dental implants installed in type IV bone have a lower success rate when compared to implants installed in type I bone, II and III?". The established inclusion criteria were: 1) controlled and randomized clinical trials (RCT), 2) prospective and retrospective studies with at least 10 participants with dental implants, and 3) patients with dental implants installed in bone tissue types I, II, III, and IV (Lekholm and Zarb, 1985). The minimum followup duration was 1 year. Results After searching the identified databases, 117 articles were selected for full reading and 68 were excluded. Thus, 49 studies were included for qualitative and quantitative analyses. The total number of participants included was 12,056, with a mean age of 41.56 years and 29,905 implants installed. Bone types I, II, and III exhibit a lower implant failure rate when compared to bone type IV. Conclusion Dental implants installed in bone types I, II, and III showed significantly higher survival rates than those installed in type IV. The bone type I success rate was not significantly different than that of type II; however, the success rate of bone type I and II was higher than that of type III.
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Affiliation(s)
- Cleber Rosa
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, Sao Paulo, Brazil
| | - Victor Bento
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, Sao Paulo, Brazil
| | - Nathália Duarte
- Department of Basic Sciences, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, Sao Paulo, Brazil
| | - Joao Sayeg
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, Sao Paulo, Brazil
| | - Thawan Santos
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, Sao Paulo, Brazil
| | - Eduardo Pellizzer
- Department of Dental Materials and Prosthodontics, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, Sao Paulo, Brazil
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Khaohoen A, Sornsuwan T, Chaijareenont P, Poovarodom P, Rungsiyakull C, Rungsiyakull P. Biomaterials and Clinical Application of Dental Implants in Relation to Bone Density-A Narrative Review. J Clin Med 2023; 12:6924. [PMID: 37959389 PMCID: PMC10649288 DOI: 10.3390/jcm12216924] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 10/29/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023] Open
Abstract
Titanium has been the material of choice for dental implant fixtures due to its exceptional qualities, such as its excellent balance of rigidity and stiffness. Since zirconia is a soft-tissue-friendly material and caters to esthetic demands, it is an alternative to titanium for use in implants. Nevertheless, bone density plays a vital role in determining the material and design of implants. Compromised bone density leads to both early and late implant failures due to a lack of implant stability. Therefore, this narrative review aims to investigate the influence of implant material/design and surgical technique on bone density from both biomechanical and biological standpoints. Relevant articles were included for analysis. Dental implant materials can be fabricated from titanium, zirconia, and PEEK. In terms of mechanical and biological aspects, titanium is still the gold standard for dental implant materials. Additionally, the macro- and microgeometry of dental implants play a role in determining and planning the appropriate treatment because it can enhance the mechanical stress transmitted to the bone tissue. Under low-density conditions, a conical titanium implant design, longer length, large diameter, reverse buttress with self-tapping, small thread pitch, and deep thread depth are recommended. Implant material, implant design, surgical techniques, and bone density are pivotal factors affecting the success rates of dental implant placement in low-density bone. Further study is required to find the optimal implant material for a clinical setting's bone state.
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Affiliation(s)
- Angkoon Khaohoen
- Department of Prosthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand; (A.K.); (P.C.); (P.P.)
| | - Tanapon Sornsuwan
- Department of Restorative Dentistry, Faculty of Dentistry, Naresuan University, Phitsanulok 65000, Thailand;
| | - Pisaisit Chaijareenont
- Department of Prosthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand; (A.K.); (P.C.); (P.P.)
| | - Pongsakorn Poovarodom
- Department of Prosthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand; (A.K.); (P.C.); (P.P.)
| | - Chaiy Rungsiyakull
- Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Pimduen Rungsiyakull
- Department of Prosthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand; (A.K.); (P.C.); (P.P.)
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4
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Thapa D, Shrestha P, Bhochhibhoya A, Sharma R. Retrieval of a displaced implant from the mandibular body: A clinical report. J Prosthet Dent 2023:S0022-3913(23)00443-2. [PMID: 37612196 DOI: 10.1016/j.prosdent.2023.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 08/25/2023]
Abstract
The posterior mandible is often regarded as a reliable area for achieving primary stability during implant placement. However, in rare instances, implant displacement can occur in this region because of a significant decrease in bone density. Typically, surgical procedures such as the lateral or crestal approach have been used to remove displaced implants, requiring extensive bone removal and postponing implant placement for between 3 and 6 months. This clinical report presents an uncommon occurrence of implant displacement in the posterior mandible and introduces a less invasive approach to recovering it. This technique utilized the long screw of an open-tray impression post and an abutment to retrieve the displaced implant while simultaneously performing implant placement at the same site.
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Affiliation(s)
- Dipak Thapa
- Consultant Prosthodontist, Private practice, Kathmandu, Nepal
| | | | - Amar Bhochhibhoya
- Assistant Professor, Department of Prosthodontics, Tribhuvan University Teaching Hospital, Maharajgunj Medical Campus, Institute of Medicine, Kathmandu, Nepal.
| | - Rinu Sharma
- Assistant Professor, Department of Prosthodontics, Tribhuvan University Teaching Hospital, Maharajgunj Medical Campus, Institute of Medicine, Kathmandu, Nepal
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Brancacci E, García González S, Galve-Huertas A, Bennani A, Hernández Alfaro F, Aboul-Hosn Centenero S. Influence of Insertion Torques on the Surface Integrity in Different Dental Implants: An Ex Vivo Descriptive Study. MATERIALS (BASEL, SWITZERLAND) 2023; 16:ma16062330. [PMID: 36984210 PMCID: PMC10058042 DOI: 10.3390/ma16062330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 03/05/2023] [Accepted: 03/13/2023] [Indexed: 05/14/2023]
Abstract
BACKGROUND The primary objective of this ex vivo study was to assess the influence of increasing insertion torques on three types of dental implants and possible alterations of their microgeometry after the application of three different torque intensities. METHODS 27 implants of 3 different implant brands (Groups A, B and C) were placed in cow ribs using 30 Ncm, 45 Ncm and 55 Ncm insertion torques. The implants were subsequently removed using trephine burs, and SEM analysis was carried out in order to detect implant surface and connection changes, as compared to the implant controls. RESULTS Surface deformations were predominantly observed on the third apical part of the implants. The alterations presented with increasing insertion torques, with 45 Ncm being the threshold value. Prosthetic connections were also compromised. CONCLUSIONS The changes sustained by the implants were proportional to the insertion torque they were subjected to; 45 Ncm and greater insertion torques resulted in more consistent damage, both on the implant surface and the implant connection.
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Affiliation(s)
- Erika Brancacci
- Department of Oral & Maxillofacial Surgery, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vàlles, Spain
- Correspondence:
| | - Susana García González
- Department of Oral & Maxillofacial Surgery, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vàlles, Spain
| | - Andrea Galve-Huertas
- Department of Oral & Maxillofacial Surgery, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vàlles, Spain
| | - Aida Bennani
- Department of Dentistry, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Spain
| | - Federico Hernández Alfaro
- Department of Oral & Maxillofacial Surgery, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vàlles, Spain
| | - Samir Aboul-Hosn Centenero
- Department of Oral & Maxillofacial Surgery, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vàlles, Spain
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Salem AS, Mowafey B, Elsheikh HAE, Gadallah AMT, Kandil I. Impact of Three Different Surgical Drilling Protocols on Early Loaded Single Implant in Posterior Maxilla: A 3-year Follow-up. J Contemp Dent Pract 2022; 23:819-827. [DOI: https:/doi.org/10.5005/jp-journals-10024-3391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
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7
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Elsheikh HAE, Gadallah AMT, Mowafey B, Kandil I, Salem AS. Impact of Three Different Surgical Drilling Protocols on Early Loaded Single Implant in Posterior Maxilla: A 3-year Follow-up. J Contemp Dent Pract 2022; 23:819-827. [PMID: 37283017 DOI: 10.5005/jp-journals-10024-3391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
AIM This study aims to compare three different drilling techniques for implant site preparation to enhance the primary stability of the early loaded single implant in the posterior maxilla. MATERIALS AND METHODS A total of 36 dental implants were used in this study for the replacement of a missing single tooth or more in the maxillary posterior region with an early loaded dental implant. The patients were randomly divided into three groups. In group I, the drilling was performed using an undersized drilling technique, in group II, the drilling was performed using bone expanders, and in group III, the drilling was performed using the osseodensification (OD) technique. Patients were evaluated clinically and radiographically at regular time intervals immediately, 4 weeks, 6 months, 1 year, 2 years, and 3 years after surgery. All clinical and radiographic parameters were subjected to statistical analysis. RESULTS All implants in group I were stable and successful, while 11 from 12 implants survived in both groups II and III. There was no significant difference in peri-implant soft tissue health and marginal bone loss (MBL) throughout the whole study period between the three groups, while there was a significant difference in implant stability and insertion torque between groups I, II, and III at the time of implant placement. CONCLUSION Preparing the implant bed using the undersized drilling technique with drills with similar geometry to the implant being inserted provides high implant primary stability without the need for additional instruments or cost. CLINICAL SIGNIFICANCE Dental implants can be early loaded in the posterior maxilla by using an undersized drilling technique, as it improves primary stability.
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Affiliation(s)
- Heba Abo-Elfetouh Elsheikh
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mansoura University, Mansoura, Egypt, Phone: +20 1024461010, e-mail:
| | | | - Bassant Mowafey
- Department of Oral Medicine and Periodontology, Diagnosis and Oral Radiology, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Islam Kandil
- Department of Oral Medicine and Periodontology, Diagnosis and Oral Radiology, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Ahmed S Salem
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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8
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Labban N. Use of temporary abutment to assess implant osseointegration before final impression: A case report. Clin Case Rep 2021; 9:e05159. [PMID: 34917374 PMCID: PMC8643491 DOI: 10.1002/ccr3.5159] [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: 08/09/2021] [Revised: 11/08/2021] [Accepted: 11/21/2021] [Indexed: 11/09/2022] Open
Abstract
In implant dentistry, a temporary abutment, either plastic or metal, also called an implant cylinder, is used to construct a provisional restoration. This provisional restoration can be cemented on or integrated with a temporary abutment for a screw-retained prosthesis. It can be further used as a diagnostic tool to evaluate esthetics and promote tissue healing around implants. After achieving osseointegration of the implant with the adjacent bone and a proper soft tissue profile, both the temporary abutment and the prosthesis can be replaced with permanent ones. In the present case report, a simple technique using a temporary abutment was utilized for the assessment of implant osseointegration before making the final impression. In this study, we discuss the advantages of this method over other methods. It is impossible to verify the stability of the implant at all stages of implant placement; however, the clinical procedure explained in the case report is easy to apply and provides good results.
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Affiliation(s)
- Nawaf Labban
- Department of Prosthetic Dental SciencesCollege of DentistryKing Saud UniversityRiyadhSaudi Arabia
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9
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Abrahamsson I, Carcuac O, Berglundh T. Influence of implant geometry and osteotomy design on early bone healing: A pre-clinical in vivo study. Clin Oral Implants Res 2021; 32:1190-1199. [PMID: 34352142 DOI: 10.1111/clr.13816] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 05/18/2021] [Accepted: 07/07/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To analyze the early stages of osseointegration around implants with different geometry following installation in sites using different osteotomy protocols. MATERIALS AND METHODS Two types of implants were installed using regular or modified (reduced diameter) osteotomy protocols in mandibular premolar/molar regions following tooth extraction in six dogs. Three implant site categories were created: Reference (A implant and regular osteotomy), Test-1 (B implant and regular osteotomy), and Test-2 (B implant and modified osteotomy). Implant installation procedures were repeated after 4 and 6 weeks. The insertion torque (ITQ) was measured during implant installation and resonance frequency analysis providing implant stability quotient (ISQ) values was performed following implant installation and once every week during the course of the study. Biopsies were obtained immediately after the 3rd installation procedure and prepared for histological analysis. RESULTS The modified osteotomy protocol created a higher insertion torque (ITQ). The analysis also revealed a correlation between insertion torque at implant installation and radiographic bone loss after 6 weeks of healing. The decline in ISQ values during healing was more pronounced at Test-2 than other sites. While the degree of bone-to-implant contact (BIC%) in the marginal area was similar in test and reference sites at 6 weeks of healing, Test-2 implants presented with a significantly higher BIC% in the mid and apical areas than Test-1 implants. CONCLUSIONS It is suggested that placement of implants in undersized osteotomy sites will result in an increased remodeling of the cortical bone during the early healing process.
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Affiliation(s)
- Ingemar Abrahamsson
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Olivier Carcuac
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Tord Berglundh
- Department of Periodontology, Institute of Odontology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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Sierra-Rebolledo A, Tariba-Forero D, Rios-Calvo MD, Gay-Escoda C. Effect of undersized drilling on the stability of immediate tapered implants in the anterior maxillary sector. A randomized clinical trial. Med Oral Patol Oral Cir Bucal 2021; 26:e187-e194. [PMID: 33395401 PMCID: PMC7980290 DOI: 10.4317/medoral.24107] [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: 06/22/2020] [Accepted: 12/11/2020] [Indexed: 11/29/2022] Open
Abstract
Background To evaluate the effect of undersized drilling on the primary and secondary stability of immediate implants placed in the anterior maxilla.
Material and Methods A comparative randomized clinical trial was carried out in 30 healthy adults. Thirty tapered implants, 16 involving conventional drilling and 14 undersized drilling, were placed immediately after anterior maxillary tooth removal. Insertion torque and implant stability assessed by resonance frequency analysis (RFA) were evaluated at three different timepoints: at implant placement and 6 and 12 weeks post-implantation. The results were compared using parametric statistical tests.
Results All implants showed adequate stability during follow-up. At implant placement, the undersized drilling group exhibited greater insertion torque values than the conventional drilling group, but stability assessed by RFA showed greater mean values in the conventional group. After 6 and 12 weeks of follow-up, both groups showed improved stability, though the RFA values remained comparatively higher in the conventional group. The differences were not statistically significant.
Conclusions Based on the results obtained, undersized drilling does not appear to afford significantly improved stability of immediate implants placed in the anterior zone of the maxilla during the osseointegration period. Key words:Insertion torque, RFA, undersized drilling, immediate implants, primary stability, secondary stability.
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Affiliation(s)
- A Sierra-Rebolledo
- Departamento de Estomatoquirúrgica Unidad de Investigaciones Morfo-Patológicas (UNIMPA), Pabellon 11 Campus Barbula, Facultad de Odontología, Universidad de Carabobo Valencia, Venezuela
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11
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Folkman M, Becker A, Meinster I, Masri M, Ormianer Z. Comparison of bone-to-implant contact and bone volume around implants placed with or without site preparation: a histomorphometric study in rabbits. Sci Rep 2020; 10:12446. [PMID: 32709971 PMCID: PMC7381624 DOI: 10.1038/s41598-020-69455-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 07/10/2020] [Indexed: 11/09/2022] Open
Abstract
The objective of this in vivo study was to compare bone-to-implant contact (BIC) and bone area fraction occupancy (BAFO) values of a new implant, designed to be inserted without bone preparation, using two different preparation protocols: no site preparation and prior limited cortical perforation, versus the values of a control implant using a conventional drilling protocol. Forty-one implants were inserted in 13 rabbits. Thirteen test implants with a new thread design were inserted using no bone preparation (NP), 14 test implants were inserted with limited cortical perforation (CP), and 14 conventional implants served as control. Five animals were sacrificed after 21 days and eight animals after 42 days. Histomorphometric analysis was performed and percentage of BIC and BAFO values were measured. ANOVA with Tukey post hoc and Mann-Whitney nonparametric tests were calculated to compare between the groups. Statistical analysis showed no significant difference in the measured values between any of the groups, neither compered by implant nor by compered day. The results demonstrated that biological osseointegration parameters of implant that was inserted without any bone preparation was non-inferior compared to conventional preparation. The clinical relevance is that novel implant designs may not require bone preparation prior to placement.
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Affiliation(s)
- Merav Folkman
- Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
| | - Alina Becker
- Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
| | - Isabelle Meinster
- Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
| | - Mahmoud Masri
- Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel
| | - Zeev Ormianer
- Department of Oral Rehabilitation, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Ramat Aviv, 69978, Tel Aviv, Israel.
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12
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Tabassum A, Meijer GJ, Cuijpers VMJI, Frank Walboomers X. Combined effect of undersized surgical technique and axial compression on the primary implant stability and host bone architecture. Saudi Dent J 2020; 33:283-291. [PMID: 34194192 PMCID: PMC8236550 DOI: 10.1016/j.sdentj.2020.03.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 03/05/2020] [Accepted: 03/08/2020] [Indexed: 12/11/2022] Open
Abstract
Aim The aim of this study was to investigate the combined effect of the lateral-compression of host-bone (undersized-osteotomy-preparation) and axial-compression of host-bone (not drilling the full length of the implant) on the primary-implant-stability and the host-bone-architecture. Materials and Methods In this experimental-study, 44 dental implants (diameter-4.2 mm; length-10 mm; Dyna®) were installed in the femoral-condyles of four cadaver-goats using four different surgical approaches (11 implant/surgical approach; n = 11). Approach-1: Standard preparation according to the manufacturer's guidelines. The bone-cavity was prepared up to 10 mm in depth and 4 mm in diameter. Approach-2: Preparation up to 8 mm in depth and 4 mm in diameter. Approach-3: Preparation up to 10 mm in depth. Approach-4: The bone-cavity was prepared up to 8 mm in depth and 3.6 mm in diameter. Insertion torque (n = 11), removal torque (n = 7) and % bone-implant contact (n = 4) measurements were recorded. Bone architecture was assessed by micro-computer tomography and histological analysis (n = 4). Results For approaches 2, 3, and 4 (P < .05), insertion-torque values were significantly higher as compared to approach 1. Regarding the bone-implant-contact percentage (%BIC), approach 3 and 4 were significantly higher compared to approach 1 and 2 (P<.05). For approach 2, the %bone volume (%BV) was significantly higher as compared to approach 1 (P<.05) for the most the inner zone of host bone in proximity of the implant. Conclusion Lateral and axial compression improved the primary-implant-stability and therefore this new surgical-technique should be considered as an alternative approach especially for placing implants in low-density bone. Nevertheless, additional in vivo studies should be performed.
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Affiliation(s)
- Afsheen Tabassum
- Department of Preventive Dentistry, Imam Abdulrahman Bin Faisal University, College of Dentistry Dammam, Saudi Arabia
| | - Gert J Meijer
- Department of Implantology & Periodontology, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands.,Department of Oral and Maxillofacial Surgery, Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
| | - Vincent M J I Cuijpers
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - X Frank Walboomers
- Department of Biomaterials, Radboud University Medical Centre, Nijmegen, the Netherlands
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13
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Stocchero M, Jinno Y, Toia M, Jimbo R, Lee C, Yamaguchi S, Imazato S, Becktor JP. In silico multi-scale analysis of remodeling peri-implant cortical bone: a comparison of two types of bone structures following an undersized and non-undersized technique. J Mech Behav Biomed Mater 2020; 103:103598. [DOI: 10.1016/j.jmbbm.2019.103598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 12/10/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022]
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14
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Stocchero M, Jinno Y, Toia M, Ahmad M, Papia E, Yamaguchi S, Becktor JP. Intraosseous Temperature Change during Installation of Dental Implants with Two Different Surfaces and Different Drilling Protocols: An In Vivo Study in Sheep. J Clin Med 2019; 8:jcm8081198. [PMID: 31405207 PMCID: PMC6723378 DOI: 10.3390/jcm8081198] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 08/03/2019] [Accepted: 08/06/2019] [Indexed: 12/30/2022] Open
Abstract
Background: The intraosseous temperature during implant installation has never been evaluated in an in vivo controlled setup. The aims were to investigate the influence of a drilling protocol and implant surface on the intraosseous temperature during implant installation, to evaluate the influence of temperature increase on osseointegration and to calculate the heat distribution in cortical bone. Methods: Forty Brånemark implants were installed into the metatarsal bone of Finnish Dorset crossbred sheep according to two different drilling protocols (undersized/non-undersized) and two surfaces (moderately rough/turned). The intraosseous temperature was recorded, and Finite Element Model (FEM) was generated to understand the thermal behavior. Non-decalcified histology was carried out after five weeks of healing. The following osseointegration parameters were calculated: Bone-to-implant contact (BIC), Bone Area Fraction Occupancy (BAFO), and Bone Area Fraction Occupancy up to 1.5 mm (BA1.5). A multiple regression model was used to identify the influencing variables on the histomorphometric parameters. Results: The temperature was affected by the drilling protocol, while no influence was demonstrated by the implant surface. BIC was positively influenced by the undersized drilling protocol and rough surface, BAFO was negatively influenced by the temperature rise, and BA1.5 was negatively influenced by the undersized drilling protocol. FEM showed that the temperature at the implant interface might exceed the limit for bone necrosis. Conclusion: The intraosseous temperature is greatly increased by an undersized drilling protocol but not from the implant surface. The temperature increase negatively affects the bone healing in the proximity of the implant. The undersized drilling protocol for Brånemark implant systems increases the amount of bone at the interface, but it negatively impacts the bone far from the implant.
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Affiliation(s)
- Michele Stocchero
- Department of Oral & Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, 20506 Malmö, Sweden
| | - Yohei Jinno
- Department of Oral & Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, 20506 Malmö, Sweden.
| | - Marco Toia
- Department of Oral & Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, 20506 Malmö, Sweden
| | - Marianne Ahmad
- Department of Oral & Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, 20506 Malmö, Sweden
| | - Evaggelia Papia
- Department of Materials Science and Technology, Faculty of Odontology, Malmö University, 20506 Malmö, Sweden
| | - Satoshi Yamaguchi
- Department of Biomaterials Science, Osaka University Graduate School of Dentistry, Osaka 565-0871, Japan
| | - Jonas P Becktor
- Department of Oral & Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, 20506 Malmö, Sweden
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Al-Sabbagh M, Eldomiaty W, Khabbaz Y. Can Osseointegration Be Achieved Without Primary Stability? Dent Clin North Am 2019; 63:461-473. [PMID: 31097138 DOI: 10.1016/j.cden.2019.02.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The osseointegration and survival of dental implants are linked to primary stability. Good primary stability relies on the mechanical friction between implant surface and surrounding bone with absence of mobility in the osteotomy site immediately after implant placement. Several factors have been found to affect implant primary stability, including bone density, implant design, and surgical technique. Various methods have been used to assess implant primary stability including insertion torque and resonance frequency analysis. This article aims to evaluate the success of osseointegration in the absence of primary stability and to propose recommendations to manage implants that lack primary stability.
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Affiliation(s)
- Mohanad Al-Sabbagh
- Division of Periodontology, Department of Oral Health Practice, University of Kentucky, College of Dentistry, D-438 Chandler Medical Center, 800 Rose Street, Lexington, KY 40536-0927, USA.
| | - Walied Eldomiaty
- Division of Periodontology, Department of Oral Health Practice, University of Kentucky, College of Dentistry, Lexington, KY 40536, USA
| | - Yasser Khabbaz
- Ambulatory healthcare services -SEHA-, Muroor Street, Po box 111355, Abu Dhabi, United Arab Emirates
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16
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Bagegni A, Abou-Ayash S, Rücker G, Algarny A, Att W. The influence of prosthetic material on implant and prosthetic survival of implant-supported fixed complete dentures: a systematic review and meta-analysis. J Prosthodont Res 2019; 63:251-265. [PMID: 30871937 DOI: 10.1016/j.jpor.2019.02.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/20/2019] [Accepted: 02/01/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Evaluating the impact of the prosthetic material on implant- and prosthetic survival of implant-supported fixed complete dentures. STUDY SELECTION Electronic and hand searches were conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) to identify clinical studies including at least 10 patients restored with implant-supported dentures. The primary outcome was to evaluate the implant survival rate according to the applied restorative materials. The prosthetic survival rate was evaluated as secondary outcomes. RESULTS Forty-one of 2254 studies were finally selected. A statistically significant difference (p = 0.0337) was found between implant survival rates in the main restorative groups (metal-ceramic:97%(95%CI [0.96;0.98]), all-ceramic:99%(95%CI [0.98;1.00]), metal-resin:97%(95%CI [0.96;0.98])). Prosthetic survival rates were: (metal-ceramic:95%(95%CI [0.89;0.97]), all-ceramic:97%(95%CI [0.92;0.99]), metal-resin:97%(95%CI [0.95;0.98]), with no statistically significant difference (p = 0.3796) between the groups. Chipping incidence rates were as follows: metal-ceramic:8%(95%CI[0.03;0.20]), all-ceramic:15%(95%CI [0.06;0.32]), and metal-resin:22%(95%CI [0.13;0.33]). Five types of exact restorative materials were identified (porcelain-fused-to-non-precious alloy, porcelain-fused-to-zirconia, precious-metal-acrylic-resin, non-precious-metal-acrylic resin, and PMMA). Again, implant survival rates were statistically significantly influenced by the applied restorative materials (p = 0.0126), whereas, no significant differences were reported regarding prosthetic survival rate. CONCLUSIONS Prosthetic material selection seems to have no clinically relevant influence on implant- and prosthetic survival rate in implant-supported fixed complete dentures. Due to the high chipping rate, quantifying prosthetic survival alone does not seem to be a reliable tool for evaluating the outcome of the restorations and providing recommendations. These results, along with the obvious lack of evidence, suggest that clinicians must exercise caution whenever porcelain-fused-to-zirconia or metal-resin restorations are considered.
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Affiliation(s)
- Aimen Bagegni
- Department of Prosthodontics, School of Dentistry, Medical Center - University of Freiburg, Freiburg, Germany; Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Samir Abou-Ayash
- Department of Reconstructive Dentistry And Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland; Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Gerta Rücker
- Institute for Medical Biometry and Statistics, Medical Center - University of Freiburg, Freiburg, Germany; Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Ahmad Algarny
- Department of Prosthodontics, School of Dentistry, Medical Center - University of Freiburg, Freiburg, Germany; Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Wael Att
- Department of Prosthodontics, Tufts University School of Dental Medicine, Boston, MA, United States.
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Stocchero M, Toia M, Jinno Y, Cecchinato F, Becktor JP, Naito Y, Halldin A, Jimbo R. Influence of different drilling preparation on cortical bone: A biomechanical, histological, and micro-CT study on sheep. Clin Oral Implants Res 2018; 29:707-715. [DOI: 10.1111/clr.13262] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 03/18/2018] [Accepted: 04/11/2018] [Indexed: 12/11/2022]
Affiliation(s)
- Michele Stocchero
- Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology; Malmö University; Malmö Sweden
| | - Marco Toia
- Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology; Malmö University; Malmö Sweden
| | - Yohei Jinno
- Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology; Malmö University; Malmö Sweden
| | | | - Jonas P. Becktor
- Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology; Malmö University; Malmö Sweden
| | - Yoshihito Naito
- Department of Biomaterials and Bioengineering, Graduate School of Oral Science; Tokushima University; Tokushima Japan
| | | | - Ryo Jimbo
- Department of Applied Prosthodontics, Graduate School of Biomedical Sciences; Nagasaki University; Nagasaki Japan
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18
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Marconcini S, Giammarinaro E, Toti P, Alfonsi F, Covani U, Barone A. Longitudinal analysis on the effect of insertion torque on delayed single implants: A 3-year randomized clinical study. Clin Implant Dent Relat Res 2018; 20:322-332. [DOI: 10.1111/cid.12586] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 12/19/2017] [Accepted: 01/04/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Simone Marconcini
- Department of Surgical, Medical, Molecular and Critical Area Pathology; University of Pisa; Pisa Italy
| | - Enrica Giammarinaro
- Department of Surgical, Medical, Molecular and Critical Area Pathology; University of Pisa; Pisa Italy
| | - Paolo Toti
- Department of Surgical, Medical, Molecular and Critical Area Pathology; University of Pisa; Pisa Italy
| | - Fortunato Alfonsi
- Department of Surgery and Translational Medicine; University of Florence; Florence Italy
| | - Ugo Covani
- Department of Surgical, Medical, Molecular and Critical Area Pathology; University of Pisa; Pisa Italy
| | - Antonio Barone
- Unit of Oral Surgery and Implantology, University-Hospital at Geneva, Department of Surgery; School of Dental Medicine; Geneva Switzerland
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19
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Wilson TG, Miller RJ, Trushkowsky R, Dard M. Tapered Implants in Dentistry: Revitalizing Concepts with Technology: A Review. Adv Dent Res 2017; 28:4-9. [PMID: 26927482 DOI: 10.1177/0022034516628868] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The most common approach to lessen treatment times is by decreasing the healing period during which osseointegration is established. Implant design parameters such as implant surface, primary stability, thread configuration, body shape, and the type of bone have to be considered to obtain this objective. The relationship that exists between these components will define the initial stability of the implant. It is believed implant sites using a tapered design and surface modification can increase the primary stability in low-density bone. Furthermore, recent experimental preclinical work has shown the possibility of attaining primary stability of immediately loaded, tapered dental implants without compromising healing and rapid bone formation while minimizing the implant stability loss at compression sites. This may be of singular importance with immediate/early functional loading of single implants placed in poor-quality bone. The selection of an implant that will provide adequate stability in bone of poor quality is important. A tapered-screw implant design will provide adequate stability because it creates pressure on cortical bone in areas of reduced bone quality. Building on the success of traditional tapered implant therapy, newer tapered implant designs should aim to maximize the clinical outcome by implementing new technologies with adapted clinical workflows.
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Affiliation(s)
| | | | - R Trushkowsky
- New York University College of Dentistry, Department of Cariology and Comprehensive Care, New York City, NY, USA
| | - M Dard
- New York University College of Dentistry, Department of Periodontology and Implant Dentistry, New York City, NY, USA Institut Straumann, Basel, Switzerland
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20
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Comparison Between Cortical Drill and Cortical Tap and Their Influence on Primary Stability of Macro-Thread Tapered Implant in Thin Crestal Cortical Bone and Low-Density Bone. IMPLANT DENT 2017; 26:711-717. [PMID: 28542042 DOI: 10.1097/id.0000000000000614] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To evaluate the effect of different surgical techniques on primary stability, particularly in poor-quality bone with or without a crestal cortical bone. MATERIALS AND METHODS Three implant site preparation techniques-undersized drilling (UD), undersized drilling and coronal widening with a cortical drill (UD + CD), undersized drilling and coronal tapping with a cortical tap (UD + CT)-were compared in 2 different low-density polyurethane bone models either with or without the crestal cortical bone. Insertion torque values (ITVs) for each technique was recorded. RESULTS Statistically significant difference was observed for all 3 surgical techniques. In the presence of a crestal cortical bone, the peak ITV for UD was the highest, UD + CT the second, and UD + CD the lowest. All peak ITVs remained significantly lower in the absence of a crestal cortical bone. CONCLUSION Our findings suggested that UD + CTmay be the most effective implant surgical technique to achieve an ideal primary stability in low-density bone with a thin crestal cortical bone layer. Also, this technique may prevent compression necrosis of the dense cortical bone.
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21
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Reliability of Resonance Frequency Analysis as an Indicator of Implant Micromotion. IMPLANT DENT 2016; 25:783-788. [DOI: 10.1097/id.0000000000000498] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Correlation of radiographic analysis during initial planning and tactile perception during the placement of implants. Br J Oral Maxillofac Surg 2016; 55:17-21. [PMID: 27633904 DOI: 10.1016/j.bjoms.2016.08.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 08/15/2016] [Indexed: 10/21/2022]
Abstract
Most of the decisions made in planning treatment with implants rely on the clinician's assessment of the density of the jawbone. However, we know of only a few studies that have evaluated the clinicians' subjectivity and the objective quantitative methods. Our aim was to assess whether the characteristics of the bone seen on preoperative imaging are similar to the features faced during the operation. We collected data about 32 implant procedures done during the Specialisation Course for Implant Dentistry, Universidade de Ribeirão Preto, San Paulo. First, the clinicians evaluated the panoramic radiograph and computed tomographic scans preoperatively, classified the bone density according to the Lekholm and Zarb classification, and marked their subjective evaluation on a visual analogue scale. Postoperatively the surgeons filled out a questionnaire based on their subjective perceptions obtained during the insertion of the implants. Another examiner answered the same questionnaire after looking at the patient's images but without knowing the surgeon's results. There was a good correlation between the surgeons' preoperative classification of the type of bone and their tactile perception (p=0.000), and a good correlation between the surgeon's preoperative classification of the bone and the examiner's findings (p=0.000). We conclude that imaging is an important part of preoperative planning and can predict the quality of the bone when coupled with the opinion of a trained clinician, objective analysis, and standard classification of the bone.
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23
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Abstract
Implant stability plays a critical role for successful osseointegration. Successful osseointegration is a prerequisite for functional dental implants. Continuous monitoring in an objective and qualitative manner is important to determine the status of implant stability. Implant stability is measured at two different stages: Primary and secondary. Primary stability comes from mechanical engagement with cortical bone. Secondary stability is developed from regeneration and remodeling of the bone and tissue around the implant after insertion and affected by the primary stability, bone formation and remodelling. The time of functional loading is dependent upon the implant stability. Historically the gold standard method to evaluate stability were microscopic or histologic analysis, radiographs, however due to invasiveness of these methods and related ethical issues various other methods have been proposed like cutting torque resistance, reverse torque analysis, model analysis etc. It is, therefore, of an utmost importance to be able to access implant stability at various time points and to project a long term prognosis for successful therapy. Therefore this review focuses on the currently available methods for evaluation of implant stability.
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Affiliation(s)
- Vasanthi Swami
- Department of Prosthodontics, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Vasantha Vijayaraghavan
- Department of Prosthodontics, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
| | - Vinit Swami
- Department of Orthodontics, Bharati Vidyapeeth Dental College and Hospital, Pune, Maharashtra, India
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24
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Gramanzini M, Gargiulo S, Zarone F, Megna R, Apicella A, Aversa R, Salvatore M, Mancini M, Sorrentino R, Brunetti A. Combined microcomputed tomography, biomechanical and histomorphometric analysis of the peri-implant bone: a pilot study in minipig model. Dent Mater 2016; 32:794-806. [PMID: 27063459 DOI: 10.1016/j.dental.2016.03.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 03/09/2016] [Accepted: 03/22/2016] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To present a practical approach that combines biomechanical tests, microcomputed tomography (μCT) and histomorphometry, providing quantitative results on bone structure and mechanical properties in a minipig model, in order to investigate the specific response to an innovative dental biomaterial. METHODS Titanium implants with innovative three-dimensional scaffolds were inserted in the tibias of 4 minipigs. Primary stability and osseointegration were investigated by means of insertion torque (IT) values, resonance frequency analysis (RFA), bone-to-implant contact (BIC), bone mineral density (BMD) and stereological measures of trabecular bone. RESULTS A significant positive correlation was found between IT and RFA (r=0.980, p=0.0001). BMD at the implant sites was 18% less than the reference values (p=0.0156). Peri-implant Tb.Th was 50% higher, while Tb.N was 50% lower than the reference zone (p<0.003) and they were negatively correlated (r=-0.897, p=0.006). SIGNIFICANCE μCT increases evaluation throughput and offers the possibility for qualitative three-dimensional recording of the bone-implant system as well as for non-destructive evaluation of bone architecture and mineral density, in combination with conventional analysis methods. The proposed multimodal approach allows to improve accuracy and reproducibility for peri-implant bone measurements and could support future investigations.
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Affiliation(s)
- Matteo Gramanzini
- Institute of Biostructure and Bioimaging, National Research Council, Via T. De Amicis 95, 80145 Naples, Italy; CEINGE scarl, Via G. Salvatore 486, 80145 Naples, Italy.
| | - Sara Gargiulo
- Institute of Biostructure and Bioimaging, National Research Council, Via T. De Amicis 95, 80145 Naples, Italy; CEINGE scarl, Via G. Salvatore 486, 80145 Naples, Italy.
| | - Fernando Zarone
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine, University "Federico II", Via Pansini 5, 80131 Naples, Italy.
| | - Rosario Megna
- Institute of Biostructure and Bioimaging, National Research Council, Via T. De Amicis 95, 80145 Naples, Italy.
| | - Antonio Apicella
- Department of Architecture and Industrial Design, Second University of Naples, Borgo San Lorenzo, 81031 Aversa, Italy.
| | - Raffaella Aversa
- Department of Architecture and Industrial Design, Second University of Naples, Borgo San Lorenzo, 81031 Aversa, Italy.
| | | | - Marcello Mancini
- Institute of Biostructure and Bioimaging, National Research Council, Via T. De Amicis 95, 80145 Naples, Italy.
| | - Roberto Sorrentino
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, School of Medicine, University "Federico II", Via Pansini 5, 80131 Naples, Italy; Department of Architecture and Industrial Design, Second University of Naples, Borgo San Lorenzo, 81031 Aversa, Italy.
| | - Arturo Brunetti
- Department of Advanced Medical Sciences, University "Federico II", Via Pansini 5, 80145 Naples, Italy; CEINGE scarl, Via G. Salvatore 486, 80145 Naples, Italy.
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25
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Naygovzina NB, Luchinskiy AV. [Analysis of volume and costs of dental care provided in outpatient settings]. STOMATOLOGIIA 2016; 95:76-82. [PMID: 27636768 DOI: 10.17116/stomat201695476-82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A conducted analysis of volume and cost of dental care provided in outpatient settings proves the need for harmonization of Russian Ministry of Health's documentation regulating dental checks in adults and children, and the Programme of state guarantees.
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Affiliation(s)
- N B Naygovzina
- Moscow State University of Medicine and Dentistry, Moscow, Russia
| | - A V Luchinskiy
- Moscow State University of Medicine and Dentistry, Moscow, Russia
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26
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Sousa V, Mardas N, Farias B, Petrie A, Needleman I, Spratt D, Donos N. A systematic review of implant outcomes in treated periodontitis patients. Clin Oral Implants Res 2015; 27:787-844. [DOI: 10.1111/clr.12684] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/28/2015] [Indexed: 11/26/2022]
Affiliation(s)
- Vanessa Sousa
- Department of Clinical Research; Periodontology Unit; UCL Eastman Dental Institute; London UK
| | - Nikos Mardas
- Centre for Adult Oral Health, Periodontology Unit; QMUL Bart's and The London School of Dentistry and Hospital; London UK
| | - Bruna Farias
- Federal University of Pernambuco; Recife-Pernambuco Brazil
| | - Aviva Petrie
- Biostatistics Unit; UCL Eastman Dental Institute; London UK
| | - Ian Needleman
- Department of Clinical Research; Periodontology Unit; UCL Eastman Dental Institute; London UK
- International Centre for Evidence-Based Oral Health; UCL Eastman Dental Institute; London UK
| | - David Spratt
- Department of Microbial Diseases; UCL Eastman Dental Institute; London UK
| | - Nikolaos Donos
- Department of Clinical Research; Periodontology Unit; UCL Eastman Dental Institute; London UK
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27
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Krafft T, Graef F, Karl M. Osstell Resonance Frequency Measurement Values as a Prognostic Factor in Implant Dentistry. J ORAL IMPLANTOL 2015; 41:e133-7. [DOI: 10.1563/aaid-joi-d-13-00172] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resonance frequency analysis (RFA) using the Osstell device (Osstell AB, Gothenburg, Sweden) has been advocated for quantifying implant stability on a relative scale of implant stability quotients (ISQ). It was the goal of this prospective clinical study to evaluate whether a certain ISQ level, at the time an implant is placed, correlates with successful osseointegration as some have claimed. Four hundred ninety-five implants (Straumann AG, Basel, Switzerland), varying in length and diameter, were placed in a private practice, strictly adhering to the implant manufacturer's surgical protocol. After placement and after healing periods of 42 days in the mandible and 56 days (implant manufacturer's protocol) in the maxilla, implant stability was measured using RFA. After healing, implants were torqued forward at 35 Ncm and allowed to heal further if the patients felt discomfort. Statistical analysis of the data obtained was based on Welch tests and Kolmogorov-Smirnow tests (level of significance α = 0.05). Results showed that 432 implants were osseointegrated after the predefined healing periods while 8 implants were lost and, in 55 cases, healing was prolonged. Both at insertion (P = .025) and after healing (P < .001), successful implants showed significantly different ISQ values as compared to implant failures or implants with prolonged healing. However, overlapping ISQ distributions at implant insertion demonstrated that there was no correlation among the data that could be used to predict successful osseointegration. Within the limits of this study, the prognostic value of ISQ values appears to be ambiguous.
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Affiliation(s)
| | - Friedrich Graef
- Department of Mathematics, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Matthias Karl
- Department of Prosthodontics, University of Erlangen-Nuremberg, Erlangen, Germany
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28
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Cortes ARG, Eimar H, Barbosa JDS, Costa C, Arita ES, Tamimi F. Sensitivity and Specificity of Radiographic Methods for Predicting Insertion Torque of Dental Implants. J Periodontol 2015; 86:646-55. [DOI: 10.1902/jop.2015.140584] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
The concept of osseointegration has revolutionized the treatment options for the replacement of missing teeth in both partially and completely edentulous patients. Dental implants are widely used because clinical practice and studies have documented its successful outcomes. However, implants can occasionally fail, and such failures can be classified as early or late. Measures that can aid in the early recognition of failing osseointegrated implants are needed, as are measures that can facilitate appropriate treatment methods aimed at saving failing implants by determining the probable etiologic factors. This article summarizes our current understanding of the local factors that can be linked to implant failure.
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Affiliation(s)
- Mohanad Al-Sabbagh
- Division of Periodontology, Department of Oral Health Practice, College of Dentistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536-0297, USA.
| | - Ishita Bhavsar
- Division of Periodontology, Department of Oral Health Practice, College of Dentistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536-0297, USA
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30
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Does the Implant Surgical Technique Affect the Primary and/or Secondary Stability of Dental Implants? A Systematic Review. Int J Dent 2014; 2014:204838. [PMID: 25126094 PMCID: PMC4121016 DOI: 10.1155/2014/204838] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/08/2014] [Accepted: 05/26/2014] [Indexed: 01/27/2023] Open
Abstract
Background. A number of surgical techniques for implant site preparation have been advocated to enhance the implant of primary and secondary stability. However, there is insufficient scientific evidence to support the association between the surgical technique and implant stability. Purpose. This review aimed to investigate the influence of different surgical techniques including the undersized drilling, the osteotome, the piezosurgery, the flapless procedure, and the bone stimulation by low-level laser therapy on the primary and/or secondary stability of dental implants. Materials and methods. A search of PubMed, Cochrane Library, and grey literature was performed. The inclusion criteria comprised observational clinical studies and randomized controlled trials (RCTs) conducted in patients who received dental implants for rehabilitation, studies that evaluated the association between the surgical technique and the implant primary and/or secondary stability. The articles selected were carefully read and classified as low, moderate, and high methodological quality and data of interest were tabulated. Results. Eight clinical studies were included then they were classified as moderate or high methodological quality and control of bias. Conclusions. There is a weak evidence suggesting that any of previously mentioned surgical techniques could influence the primary and/or secondary implant stability.
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Herekar M, Sethi M, Ahmad T, Fernandes AS, Patil V, Kulkarni H. A correlation between bone (B), insertion torque (IT), and implant stability (S): BITS score. J Prosthet Dent 2014; 112:805-10. [PMID: 24726588 DOI: 10.1016/j.prosdent.2014.02.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 02/27/2014] [Accepted: 02/28/2014] [Indexed: 10/25/2022]
Abstract
STATEMENT OF PROBLEM Although criteria for assessing bone quality have been reported, an overall score that correlates bone quality with the primary stability and secondary stability of implants is not yet available. PURPOSE The purpose of this article was to propose a scoring index that will establish a correlation among the bone density values from computed tomography, maximum insertion torque values, and resonance frequency analysis in different phases of implant treatment. MATERIAL AND METHODS In this study, 60 implant sites were evaluated to assess bone density (Hounsfield units), insertion torque values (Ncm), and primary stability and secondary stability (implant stability quotient values obtained by using resonance frequency analysis). On the basis of computed tomography data, the bone was classified as D1 to D4. The insertion torque was noted and classified into 2 groups, A and B. The implant stability quotient values obtained from resonance frequency analysis depicting primary stability and secondary stability were classified into 5 groups. The primary score noted was a result of the values obtained for the 3 parameters at the time of implant placement. The secondary score was obtained by considering the values of the bone density and resonance frequency analysis recorded at different time intervals. RESULTS Bone densities of D2, D3, and D4 were noted, dividing the bone type into 3 groups. The maximum torque noted in the study was 40 Ncm. The difference between various insertion torque values and bone types was found to be statistically nonsignificant. Higher mean implant stability quotient values were obtained for primary and secondary stability for the D2 bone than for D3 and D4 bone. When analyzed according to the time of insertion, the mean values increased at second stage surgery in all bone types. The difference in mean values among all bone types was found to be statistically significant (P<.001). A comparison of primary and secondary implant stability quotient values in all bone types did not find any statistical significance (P=.780). A score was recorded at the time of implant placement and at the time of second stage surgery, and the prosthetic treatment was planned accordingly. CONCLUSIONS The score highlights the importance of considering the association of bone quality, insertion torque values, and stability as denoted by implant stability quotient throughout treatment. Based on the variation in the score noted at recall visits, alterations in the treatment plan can be made with respect to the healing period and prosthetic design.
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Affiliation(s)
- Manisha Herekar
- Professor and Department Head, Department of Prosthodontics, Maratha Mandal's Nathajirao G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India.
| | - Megha Sethi
- Postgraduate student, Department of Prosthodontics, Maratha Mandal's Nathajirao G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India
| | - Tousif Ahmad
- Postgraduate student, Department of Prosthodontics, Maratha Mandal's Nathajirao G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India
| | | | - Viraj Patil
- Professor, Department of Prosthodontics, Maratha Mandal's Nathajirao G. Halgekar Institute of Dental Sciences and Research Centre, Belgaum, Karnataka, India
| | - Harish Kulkarni
- Dean, Professor, and Head of Department, Department of Oral and Maxillofacial Surgery, Tatyasaheb Kore Dental College and Research Centre, Warnanagar, Maharashtra, India
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Chrcanovic BR, Albrektsson T, Wennerberg A. Reasons for failures of oral implants. J Oral Rehabil 2014; 41:443-76. [PMID: 24612346 DOI: 10.1111/joor.12157] [Citation(s) in RCA: 227] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2014] [Indexed: 12/18/2022]
Abstract
This study reviews the literature regarding the factors contributing to failures of dental implants. An electronic search was undertaken including papers from 2004 onwards. The titles and abstracts from these results were read to identify studies within the selection criteria. All reference lists of the selected studies were then hand-searched, this time without time restrictions. A narrative review discussed some findings from the first two parts where separate data from non-comparative studies may have indicated conclusions different from those possible to draw in the systematic analysis. It may be suggested that the following situations are correlated to increase the implant failure rate: a low insertion torque of implants that are planned to be immediately or early loaded, inexperienced surgeons inserting the implants, implant insertion in the maxilla, implant insertion in the posterior region of the jaws, implants in heavy smokers, implant insertion in bone qualities type III and IV, implant insertion in places with small bone volumes, use of shorter length implants, greater number of implants placed per patient, lack of initial implant stability, use of cylindrical (non-threaded) implants and prosthetic rehabilitation with implant-supported overdentures. Moreover, it may be suggested that the following situations may be correlated with an increase in the implant failure rate: use of the non-submerged technique, immediate loading, implant insertion in fresh extraction sockets, smaller diameter implants. Some recently published studies suggest that modern, moderately rough implants may present with similar results irrespective if placed in maxillas, in smoking patients or using only short implants.
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Affiliation(s)
- B R Chrcanovic
- Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden
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Mathieu V, Vayron R, Richard G, Lambert G, Naili S, Meningaud JP, Haiat G. Biomechanical determinants of the stability of dental implants: influence of the bone-implant interface properties. J Biomech 2013; 47:3-13. [PMID: 24268798 DOI: 10.1016/j.jbiomech.2013.09.021] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 09/18/2013] [Accepted: 09/24/2013] [Indexed: 12/19/2022]
Abstract
Dental implants are now widely used for the replacement of missing teeth in fully or partially edentulous patients and for cranial reconstructions. However, risks of failure, which may have dramatic consequences, are still experienced and remain difficult to anticipate. The stability of biomaterials inserted in bone tissue depends on multiscale phenomena of biomechanical (bone-implant interlocking) and of biological (mechanotransduction) natures. The objective of this review is to provide an overview of the biomechanical behavior of the bone-dental implant interface as a function of its environment by considering in silico, ex vivo and in vivo studies including animal models as well as clinical studies. The biomechanical determinants of osseointegration phenomena are related to bone remodeling in the vicinity of the implants (adaptation of the bone structure to accommodate the presence of a biomaterial). Aspects related to the description of the interface and to its space-time multiscale nature will first be reviewed. Then, the various approaches used in the literature to measure implant stability and the bone-implant interface properties in vitro and in vivo will be described. Quantitative ultrasound methods are promising because they are cheap, non invasive and because of their lower spatial resolution around the implant compared to other biomechanical approaches.
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Affiliation(s)
- Vincent Mathieu
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France
| | - Romain Vayron
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France
| | - Gilles Richard
- Septodont, 58 Rue Pont de Créteil, 94100 Saint-Maur-des-Fossés, France
| | - Grégory Lambert
- Septodont, 58 Rue Pont de Créteil, 94100 Saint-Maur-des-Fossés, France
| | - Salah Naili
- Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France
| | - Jean-Paul Meningaud
- Service de Chirurgie Plastique, Reconstructrice et Esthétique, CHU H. Mondor, 94017 Créteil cedex, France
| | - Guillaume Haiat
- CNRS, Laboratoire Modélisation et Simulation Multi Echelle, UMR CNRS 8208, 61 avenue du Général de Gaulle, 94010 Créteil cedex, France.
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Tabassum A, Meijer GJ, Walboomers XF, Jansen JA. Evaluation of primary and secondary stability of titanium implants using different surgical techniques. Clin Oral Implants Res 2013; 25:487-92. [DOI: 10.1111/clr.12180] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Afsheen Tabassum
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
| | - Gert J. Meijer
- Department of Implantology & Periodontology; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
- Department of Oral and Maxillofacial Surgery; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
| | - X. Frank Walboomers
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
| | - John A. Jansen
- Department of Biomaterials; Radboud University Nijmegen Medical Centre; Nijmegen The Netherlands
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von Wilmowsky C, Moest T, Nkenke E, Stelzle F, Schlegel KA. Implants in bone: part II. Research on implant osseointegration: material testing, mechanical testing, imaging and histoanalytical methods. Oral Maxillofac Surg 2013; 18:355-72. [PMID: 23430020 DOI: 10.1007/s10006-013-0397-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 02/04/2013] [Indexed: 11/28/2022]
Abstract
PURPOSE In order to determine whether a newly developed implant material conforms to the requirements of biocompatibility, it must undergo rigorous testing. To correctly interpret the results of studies on implant material osseointegration, it is necessary to have a sound understanding of all the testing methods. The aim of this overview is to elucidate the methods that are used for the experimental evaluation of the osseointegration of implant materials. DISCUSSION In recent decades, there has been a constant proliferation of new materials and surface modifications in the field of dental implants. This continuous development of innovative biomaterials requires a precise and detailed evaluation in terms of biocompatibility and implant healing before clinical use. The current gold standard is in vivo animal testing on well validated animal models. However, long-term outcome studies on patients have to follow to finally validate and show patient benefit. CONCLUSION No experimental set-up can provide answers for all possible research questions. However, a certain transferability of the results to humans might be possible if the experimental set-up is carefully chosen for the aspects and questions being investigated. To enhance the implant survival rate in the rising number of patients with chronic diseases which compromise wound healing and osseointegration, dental implant research on compromised animal models will further gain importance in future.
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Affiliation(s)
- Cornelius von Wilmowsky
- Mund-,Kiefer- und Gesichtschirurgische Klinik Universitätsklinikum Erlangen, Glückstrasse 11, 91054, Erlangen, Germany,
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Coelho PG, Marin C, Teixeira HS, Campos FE, Gomes JB, Guastaldi F, Anchieta RB, Silveira L, Bonfante EA. Biomechanical Evaluation of Undersized Drilling on Implant Biomechanical Stability at Early Implantation Times. J Oral Maxillofac Surg 2013; 71:e69-75. [DOI: 10.1016/j.joms.2012.10.008] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 10/05/2012] [Accepted: 10/06/2012] [Indexed: 11/16/2022]
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Villar CC, Huynh-Ba G, Mills MP, Cochran DL. Wound healing around dental implants. ACTA ACUST UNITED AC 2013. [DOI: 10.1111/etp.12018] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Quesada-García MP, Prados-Sánchez E, Olmedo-Gaya MV, Muñoz-Soto E, Vallecillo-Capilla M, Bravo M. Dental Implant Stability Is Influenced by Implant Diameter and Localization and by the Use of Plasma Rich in Growth Factors. J Oral Maxillofac Surg 2012; 70:2761-7. [DOI: 10.1016/j.joms.2012.08.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 08/01/2012] [Accepted: 08/04/2012] [Indexed: 11/25/2022]
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Safe placement techniques for self-drilling orthodontic mini-implants. Int J Oral Maxillofac Surg 2012; 41:1439-44. [DOI: 10.1016/j.ijom.2012.05.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 04/11/2012] [Accepted: 05/31/2012] [Indexed: 11/17/2022]
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Sailer I, Mühlemann S, Zwahlen M, Hämmerle CHF, Schneider D. Cemented and screw-retained implant reconstructions: a systematic review of the survival and complication rates. Clin Oral Implants Res 2012; 23 Suppl 6:163-201. [DOI: 10.1111/j.1600-0501.2012.02538.x] [Citation(s) in RCA: 192] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Irena Sailer
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Switzerland
| | - Sven Mühlemann
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Switzerland
| | - Marcel Zwahlen
- Institute of Social and Preventive Medicine; University of Bern; Bern; Switzerland
| | - Christoph H. F. Hämmerle
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Switzerland
| | - David Schneider
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Switzerland
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Shah AH, Behrents RG, Kim KB, Kyung HM, Buschang PH. Effects of screw and host factors on insertion torque and pullout strength. Angle Orthod 2012; 82:603-10. [DOI: 10.2319/070111-427.1] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Krafft T, Winter W, Wichmann M, Karl M. Applicability of strain measurements on a contra angle handpiece for the determination of alveolar bone quality during dental implant surgery. J Craniomaxillofac Surg 2012; 40:e144-9. [DOI: 10.1016/j.jcms.2011.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2011] [Revised: 07/25/2011] [Accepted: 07/30/2011] [Indexed: 11/25/2022] Open
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Use of micro-CT-based finite element analysis to accurately quantify peri-implant bone strains: a validation in rat tibiae. Biomech Model Mechanobiol 2011; 11:743-50. [DOI: 10.1007/s10237-011-0347-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Accepted: 08/22/2011] [Indexed: 10/17/2022]
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Khayat PG, Arnal HM, Tourbah BI, Sennerby L. Clinical Outcome of Dental Implants Placed with High Insertion Torques (Up to 176 Ncm). Clin Implant Dent Relat Res 2011; 15:227-33. [DOI: 10.1111/j.1708-8208.2011.00351.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Winter W, Krafft T, Steinmann P, Karl M. Quality of alveolar bone — Structure-dependent material properties and design of a novel measurement technique. J Mech Behav Biomed Mater 2011; 4:541-8. [DOI: 10.1016/j.jmbbm.2010.12.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 12/13/2010] [Accepted: 12/20/2010] [Indexed: 11/24/2022]
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46
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Placement and removal torque values of orthodontic miniscrew implants. Am J Orthod Dentofacial Orthop 2011; 139:669-78. [DOI: 10.1016/j.ajodo.2010.11.017] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2008] [Revised: 11/01/2010] [Accepted: 11/01/2010] [Indexed: 11/22/2022]
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Freitas Jr AC, Bonfante EA, Giro G, Janal MN, Coelho PG. The effect of implant design on insertion torque and immediate micromotion. Clin Oral Implants Res 2011; 23:113-8. [DOI: 10.1111/j.1600-0501.2010.02142.x] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pantani F, Botticelli D, Garcia IR, Salata LA, Borges GJ, Lang NP. Influence of lateral pressure to the implant bed on osseointegration: an experimental study in dogs. Clin Oral Implants Res 2011; 21:1264-70. [PMID: 20626423 DOI: 10.1111/j.1600-0501.2010.01941.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM To study osseointegration and bone-level changes at implants installed using either a standard or a reduced diameter bur for implant bed preparation. MATERIAL AND METHODS In six Labrador dogs, the first and second premolars were extracted bilaterally. Subsequently, mesial roots of the first molars were endodontically treated and distal roots, including the corresponding part of the crown, were extracted. After 3 months of healing, flaps were elevated and recipient sites were prepared in all experimental sites. The control site was prepared using a standard procedure, while the test site was prepared using a drill with a 0.2 mm reduced diameter than the standard one used in the contra-lateral side. After 4 months of healing, the animals were euthanized and biopsies were obtained for histological processing and evaluation. RESULTS With the exception of one implant that was lost, all implants were integrated in mineralized bone. The alveolar crest underwent resorption at control as well as at test sites (buccal aspect ∼1 mm). The most coronal contact of bone-to-implant was located between 1.2 and 1.6 mm at the test and between 1.3 and 1.7 mm at the control sites. Bone-to-implant contact percentage was between 49% and 67%. No statistically significant differences were found for any of the outcome variables. CONCLUSIONS After 4 months of healing, lateral pressure to the implant bed as reflected by higher insertion torques (36 vs. 15 Ncm in the premolar and 19 vs. 7 Ncm in the molar regions) did not affect the bone-to-implant contact.
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Affiliation(s)
- Fabio Pantani
- Faculty of Dentistry of Araçatuba, UNESP - São Paulo State University, São Paulo, Brazil
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Ribeiro-Rotta RF, Lindh C, Pereira AC, Rohlin M. Ambiguity in bone tissue characteristics as presented in studies on dental implant planning and placement: a systematic review. Clin Oral Implants Res 2010; 22:789-801. [PMID: 21121957 DOI: 10.1111/j.1600-0501.2010.02041.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVES To survey definitions of bone tissue characteristics and methods of assessing them in studies of dental implant planning and placement. MATERIAL AND METHODOLOGY Three databases were searched using specified indexing terms. Three reviewers selected from the titles and retrieved abstracts in accordance with inclusion and exclusion criteria. Descriptions of bone tissue characteristics (bone quality, density and quantity) used before or during dental implant placement were searched for and categorized. RESULTS The search yielded 488 titles. One hundred and fort-nine publications were selected and read in full text. One hundred and eight were considered relevant. There were many different definitions and classification systems for bone tissue characteristics and examination protocols. Approximately two-third of the included publications reported the Lekholm & Zarb classification system for bone quality and quantity. However, only four studies implemented the Lekholm & Zarb system as originally proposed. A few publications described bone quality in accordance with the Misch or Trisi and Rao classifications systems. Assessment methods were often described only briefly (or not at all in one-fifth of the publications). Only one study presented the diagnostic accuracy of the assessment method, while only two presented observer performance. CONCLUSION The differing definitions and classification systems applied to dental implant planning and placement make it impossible to compare the results of various studies, particularly with respect to whether bone quality or quantity affect treatment outcomes. A consistent classification system for bone tissue characteristics is needed, as well as an appropriate description of bone tissue assessment methods, their diagnostic accuracy and observer performance.
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