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Fathi A, Rismanchian M, Khodadadi R, Dezaki SN. Does the crown-implant ratio affect the survival and complications of implant-supported prostheses? A systematic review. J Prosthet Dent 2024; 131:819-825. [PMID: 35469647 DOI: 10.1016/j.prosdent.2022.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 12/29/2022]
Abstract
STATEMENT OF PROBLEM The use of dental implants shorter than 10 mm in length increases the crown-implant ratio. Whether an increased crown-implant ratio affects the survival rate and complications is unclear. PURPOSE The purpose of this systematic review was to investigate the effect of the crown-implant ratio on the survival rate and complications of implant-supported prostheses. MATERIALS AND METHODS Five databases (PubMed, MEDLINE, Scopus, Google Scholar, and Cochrane) were electronically and manually searched for longitudinal studies with a follow-up period of 3 years or longer. The study question was "Does the crown-implant ratio affect survival rate and complications of implant-supported prostheses?" The outcomes investigated were implant survival rate, peri-implant bone resorption rate, implant fracture rate, and other technical complications in the implant components. RESULTS A total of 670 studies were identified from the research in the databases. By applying the inclusion and exclusion criteria to the full texts, 17 articles were included for descriptive analysis. Qualitative data analysis showed that the survival rate of implant-supported prostheses with a crown-implant ratio greater than 2 was 97.2%, and for a ratio lower than 1, it was about 97.6%. Moreover, 9 papers reported that increasing the crown-implant ratio reduced bone resorption, while 8 other studies reported no significant association between the increase in the crown-implant ratio and bone resorption. CONCLUSIONS No significant relationship was found between the crown-implant ratio and implant survival rate. However, increasing the crown-implant ratio is likely to decrease bone loss around the implant. Information was insufficient to analyze the relationship between the crown-implant ratio and technical complications in implant-supported prostheses.
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Affiliation(s)
- Amirhossein Fathi
- Assistant Professor, Dental Prosthodontics Department, Dental Materials Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Mansour Rismanchian
- Professor, Dental Prosthodontics Department, Dental Implants Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Reza Khodadadi
- Assistant Professor, Dental Prosthodontics Department, Dental Implants Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sara Nasrollahi Dezaki
- Graduate student, Dental Students Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
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2
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Anitua E, Larrazabal Saez de Ibarra N, Saracho Rotaeche L. Implant-Supported Prostheses in the Edentulous Mandible: Biomechanical Analysis of Different Implant Configurations via Finite Element Analysis. Dent J (Basel) 2022; 11:dj11010004. [PMID: 36661541 PMCID: PMC9858073 DOI: 10.3390/dj11010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 12/28/2022] Open
Abstract
This study explores the implant-supported prosthetic treatment alternatives of the edentulous mandible from a biomechanical point of view by means of a Finite Element Analysis (FEA). Finite element (FE) models were used to simulate cases treated with six, five, and four, implants and a fixed prosthesis with a cantilever. In the four implant treatments, three cases were analyzed; the posterior implants were placed in axial positions, angled at 30° and 45°. Cases with six and four axially placed implants were also analyzed by placing the posterior implants distally to the foramen, thus eliminating the cantilever in the prostheses. In the cases with implants between foramina, the highest values for the principal strains and von Mises stresses were observed in the case with four implants where the posterior implants were angled at 45°. Cases with implants placed distally to the foramen and without a cantilever showed much lower bone stress and strain levels compared to cases with implants between foramina. From a biomechanical point of view, it seems to be a better option to use implants positioned distally to the foramen, eliminating cantilevers.
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3
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Pandey KP, Kherdekar RS, Advani H, Dixit S, Dixit A. Mandibular Alveolar Ridge Split With Simultaneous Implant Placement: A Case Report. Cureus 2022; 14:e31156. [DOI: 10.7759/cureus.31156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/06/2022] [Indexed: 11/08/2022] Open
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Influence of Implant Tilting and Length on the Biomechanics of Single-Tooth Restoration: A Finite Element Analysis in Atrophic Mandible. Dent J (Basel) 2022; 10:dj10050077. [PMID: 35621530 PMCID: PMC9139222 DOI: 10.3390/dj10050077] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/19/2022] [Accepted: 04/24/2022] [Indexed: 12/28/2022] Open
Abstract
The aim of the present study is to assess by means of finite element models the effect on bone stresses of implant length and tilting in single-unit implant restorations. The factors that were analyzed in this study were implant length (4.5, 5.5, and 10 mm), implant titling (0, 17°, 30°, and 45°), bone type (0/I, II, and III), and loading (immediate and delayed). An axial load of 200 N was applied to the occlusal surface of the prosthesis at a height of 11 mm and the Von Mises equivalent stress in the bone was analyzed. Finite element analysis indicated that the most determinant factor was implant tilting. Tilting the implant by 17° doubled the Von Mises stress received by bone. The highest increase was in the case of implant tilting at 45° (by 1300%). The use of extra-short implants did not produce a significant increase in Von Mises stress in bone. Moreover, the length of the implant did not affect the stress value in bone types I and II. Based on the obtained results, an axially placed short implant would be a better option than titling a standard-length implant to support a crown restoration in an atrophic mandible from a biomechanical point of view.
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Sharaf MY, Eskander AE, Elbakery AI. Short-Term Evaluation of Prosthetic Rehabilitation of Thin Wiry Ridge by Ridge Splitting and Simultaneous Implants Placement: Non-randomized Control Trial. Eur J Dent 2021; 16:414-423. [PMID: 34863083 PMCID: PMC9339942 DOI: 10.1055/s-0041-1736292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Objective
This article evaluates the success of prosthetic rehabilitation of thin wiry ridge and implants placed simultaneously in splitted ridge both clinically and radiographically.
Materials and Methods
Twenty-one participants were enrolled of which 13 patients (8 females and 5 males) were suffering from maxillary ridge atrophy and 8 patients (5 females and 3 males) had mandibular ridge atrophy; a total of 42 implants were performed using the ridge expansion technique. The expansion was performed using the conventional disk technique, piezoelectric corticotomy, and self-threading expanders. Implants were placed and loaded with fixed partial denture after 4 months for the mandible and 6 months for the maxilla. Implant stability quotient (ISQ) was measured at T0 (implant placement) and TL (loading). Crestal bone levels were measured at different times: T0, TL, and T12 (12 months). Evaluation of prosthetic and surgical complications was carried out. Data were analyzed and compared using analysis of variance and paired
t
-tests at a significance level of 5%.
Results
All implants met the criteria for success. All implants showed a higher mean bone loss from T0 to TL (1.259 ± 0.3020) than from TL to T12 (0.505 ± 0.163) with a statistically significant difference (
p
< 0.0001). ISQ values sharply increased at the time of loading (72.52 ± 2.734) than at implant insertion (44.5 ± 4.062) with a significant difference (
p
< 0.0001). Minor prosthetic and surgical complications were reported.
Conclusion
The results from this study support the efficacy of prosthetic rehabilitation of thin wiry ridge using split ridge technique and the success of implants placed simultaneously in splitted ridge.
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Affiliation(s)
- Mohamed Y Sharaf
- Department of Prosthodontics, Faculty of Dentistry, University of Menoufia, Menoufia, Egypt
| | - Asharf Email Eskander
- Department of Prosthodontics, Faculty of Dentistry, University of Cairo, Cairo, Egypt
| | - Ahmed Ibrahim Elbakery
- Department of Prosthodontics, Faculty of Dentistry, University of Ahram Canadian, Cairo, Egypt
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6
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The Impact of Dental Implant Length on Failure Rates: A Systematic Review and Meta-Analysis. MATERIALS 2021; 14:ma14143972. [PMID: 34300891 PMCID: PMC8307721 DOI: 10.3390/ma14143972] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 12/22/2022]
Abstract
The present review aimed to evaluate the impact of implant length on failure rates between short (<10 mm) and long (≥10 mm) dental implants. An electronic search was undertaken in three databases, as well as a manual search of journals. Implant failure was the outcome evaluated. Meta-analysis was performed in addition to a meta-regression in order to verify how the risk ratio (RR) was associated with the follow-up time. The review included 353 publications. Altogether, there were 25,490 short and 159,435 long implants. Pairwise meta-analysis showed that short implants had a higher failure risk than long implants (RR 2.437, p < 0.001). There was a decrease in the probability of implant failure with longer implants when implants of different length groups were compared. A sensitivity analysis, which plotted together only studies with follow-up times of 7 years or less, resulted in an estimated increase of 0.6 in RR for every additional month of follow-up. In conclusion, short implants showed a 2.5 times higher risk of failure than long implants. Implant failure is multifactorial, and the implant length is only one of the many factors contributing to the loss of an implant. A good treatment plan and the patient’s general health should be taken into account when planning for an implant treatment.
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7
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Fraulob M, Vayron R, Le Cann S, Lecuelle B, Hériveaux Y, Albini Lomami H, Flouzat Lachaniette CH, Haïat G. Quantitative ultrasound assessment of the influence of roughness and healing time on osseointegration phenomena. Sci Rep 2020; 10:21962. [PMID: 33319800 PMCID: PMC7738679 DOI: 10.1038/s41598-020-78806-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 11/23/2020] [Indexed: 12/04/2022] Open
Abstract
The evolution of bone tissue quantity and quality in contact with the surface of orthopedic and dental implants is a strong determinant of the surgical outcome but remains difficult to be assessed quantitatively. The aim of this study was to investigate the performance of a quantitative ultrasound (QUS) method to measure bone-implant interface (BII) properties. A dedicated animal model considering coin-shaped titanium implants with two levels of surface roughness (smooth, Sa = 0.49 µm and rough, Sa = 3.5 µm) allowed to work with a reproducible geometry and a planar interface. The implants were inserted in rabbit femurs and tibiae for 7 or 13 weeks. The ultrasonic response of the BII was measured ex vivo, leading to the determination of the 2-D spatial variations of bone in contact with the implant surface. Histological analysis was carried out to determine the bone-implant contact (BIC) ratio. The amplitude of the echo was significantly higher after 7 weeks of healing time compared to 13 weeks, for both smooth (p < 0.01) and rough (p < 0.05) implants. A negative correlation (R = − 0.63) was obtained between the ultrasonic response and the BIC. This QUS technique is more sensitive to changes of BII morphology compared to histological analyses.
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Affiliation(s)
- M Fraulob
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - R Vayron
- Laboratoire d'Automatique, de Mécanique et d'informatique Industrielles et Humaines, LAMIH UMR CNRS 8201, Université Polytechnique Hauts de France, 59300, Valenciennes, France
| | - S Le Cann
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - B Lecuelle
- Centre de Recherche BioMédicale, Ecole Nationale Vétérinaire d'Alfort, 7 Avenue du Général de Gaulle, 94700, Maisons-Alfort, France
| | - Y Hériveaux
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - H Albini Lomami
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France
| | - C H Flouzat Lachaniette
- INSERM U955, IMRB Université Paris-Est, 51 avenue du Maréchal de Lattre de Tassigny, 94000, Créteil, France.,Service de Chirurgie Orthopédique et Traumatologique, Hôpital Henri Mondor AP-HP, CHU Paris 12, Université Paris-Est, 51 avenue du Maréchal de Lattre de Tassigny, 94000, Créteil, France
| | - G Haïat
- MSME, CNRS UMR 8208, Univ Paris Est Creteil, Univ Gustave Eiffel, CNRS, 61, Avenue du Général de Gaulle, 94010, Créteil Cedex, France.
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Caramês J, Pinto AC, Caramês G, Francisco H, Fialho J, Marques D. Survival Rate of 1008 Short Dental Implants with 21 Months of Average Follow-Up: A Retrospective Study. J Clin Med 2020; 9:jcm9123943. [PMID: 33291369 PMCID: PMC7761997 DOI: 10.3390/jcm9123943] [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: 11/15/2020] [Revised: 11/27/2020] [Accepted: 12/03/2020] [Indexed: 01/26/2023] Open
Abstract
This retrospective study evaluated the survival rate of short, sandblasted acid-etched surfaced implants with 6 and 8 mm lengths with at least 120 days of follow-up. Data concerning patient, implant and surgery characteristics were retrieved from clinical records. Sandblasted and acid-etched (SLA)-surfaced tissue-level 6 mm (TL6) or 8 mm (TL8) implants or bone-level tapered 8 mm (BLT8) implants were used. Absolute and relative frequency distributions were calculated for qualitative variables and mean values and standard deviations for quantitative variables. A Cox regression model was performed to verify whether type, length and/or width influence the implant survival. The cumulative implant survival rate was assessed by time-to-event analyses (Kaplan–Meier estimator). In all, 513 patients with a mean age of 58.00 ± 12.44 years received 1008 dental implants with a mean follow-up of 21.57 ± 10.77 months. Most implants (78.17%) presented a 4.1 mm diameter, and the most frequent indication was a partially edentulous arch (44.15%). The most frequent locations were the posterior mandible (53.97%) and the posterior maxilla (31.55%). No significant differences were found in survival rates between groups of type, length and width of implant with the cumulative rate being 97.7% ± 0.5%. Within the limitations of this study, the evaluated short implants are a predictable option with high survival rates during the follow-up without statistical differences between the appraised types, lengths and widths.
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Affiliation(s)
- João Caramês
- Faculty of Dental Medicine, University of Lisbon, 1600-277 Lisbon, Portugal; (J.C.); (H.F.)
- Instituto de Implantologia, 1070-064 Lisbon, Portugal; (A.C.P.); (G.C.)
- LIBPhys-FCT UID/FIS/04559/2013, Faculty of Dental Medicine, University of Lisbon, 1600-277 Lisbon, Portugal
| | | | - Gonçalo Caramês
- Instituto de Implantologia, 1070-064 Lisbon, Portugal; (A.C.P.); (G.C.)
| | - Helena Francisco
- Faculty of Dental Medicine, University of Lisbon, 1600-277 Lisbon, Portugal; (J.C.); (H.F.)
- Instituto de Implantologia, 1070-064 Lisbon, Portugal; (A.C.P.); (G.C.)
| | - Joana Fialho
- Escola Superior de Tecnologia e Gestão de Viseu, Centro de Estudos em Educação, Tecnologias e Saúde, 3504-510 Viseu, Portugal;
| | - Duarte Marques
- Faculty of Dental Medicine, University of Lisbon, 1600-277 Lisbon, Portugal; (J.C.); (H.F.)
- Instituto de Implantologia, 1070-064 Lisbon, Portugal; (A.C.P.); (G.C.)
- LIBPhys-FCT UID/FIS/04559/2013, Faculty of Dental Medicine, University of Lisbon, 1600-277 Lisbon, Portugal
- Correspondence: ; Tel.: +35-19-6648-6375
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9
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Sheen D, Nikoyan L. Placement of Short Implants: A Viable Alternative? Dent Clin North Am 2020; 65:21-31. [PMID: 33213710 DOI: 10.1016/j.cden.2020.09.001] [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: 11/25/2022]
Abstract
The placement of short implants, which measure less than 10 mm in length, requires the practitioner to have a thorough comprehension of implant dentistry to achieve acceptable results. Innovation of the rough-surface implant and the progression of the implant-abutment interface from an external hex to an internal connection have considerably influenced the longevity of short implants. Dentists are better equipped to serve their patients because the utilization of short implants may preclude the need for advanced surgical bone-grafting procedures.
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Affiliation(s)
- David Sheen
- Department of Oral and Maxillofacial Surgery, Woodhull Medical Center, Brooklyn, NY, USA.
| | - Levon Nikoyan
- Department of Oral and Maxillofacial Surgery, Woodhull Medical Center, Brooklyn, NY, USA; Private Practice, Forward Oral Surgery, 248-62 Jericho Tpke, Floral Park, NY 11001, USA
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10
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Iezzi G, Perrotti V, Piattelli A, D'Arcangelo C, Altieri F, Cassetta M. Split crest technique for implant treatment of agenesis of the upper lateral incisors: results of a randomized pilot histological and clinical study at 24-month follow-up. Braz Oral Res 2020; 34:e118. [PMID: 32901733 DOI: 10.1590/1807-3107bor-2020.vol34.0118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 07/10/2020] [Indexed: 11/22/2022] Open
Abstract
Agenesis of lateral incisors, besides the functional issues, represents a great esthetic drawback. The selection of an appropriate treatment is a complex decision, which should consider the stability of the clinical outcomes over time. The aim of the present study was a histological and clinical comparison of two-stage split crest technique (SCT), with bone chips alone or mixed with porcine bone in patients affected by unilateral and bilateral agenesis of the upper lateral incisors. Eleven patients were enrolled, and randomly assigned to receive a treatment with autologous bone chips (group 1) or autologous bone chips mixed 1:1 to porcine-derived xenogenic bone (group 2). After a 2-month healing period, implants were placed and biopsies harvested for histomorphometrical evaluation. Clinical assessment, according to ICOI PISA health scale, and radiographic marginal bone loss evaluation at 12- and 24-month follow-ups were conducted. The histomorphometry showed significantly greater new bone formation (p > 0.0229) in group 2. At 12- and 24-month follow-ups, all the evaluated implants, regardless of the group they were allocated, could be categorized as "success" in the ICOI Pisa Health Scale for Dental Implants, and did not show significant difference in crestal bone loss. To the best of our knowledge, these are the first histological and clinical outcomes indicating that the use of bone chips mixed 1:1 to porcine bone in SCT could be a promising technique for the rehabilitation of patients with agenesis of the upper lateral incisors, although studies with a larger number of patients and implants, and a longer follow up are needed.
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Affiliation(s)
- Giovanna Iezzi
- University of Chieti-Pescara Department of Medical, Oral and Biotechnological Sciences, Chieti, Italy
| | - Vittoria Perrotti
- University of Chieti-Pescara Department of Medical, Oral and Biotechnological Sciences, Chieti, Italy
| | - Adriano Piattelli
- University of Chieti-Pescara Department of Medical, Oral and Biotechnological Sciences, Chieti, Italy
| | - Camillo D'Arcangelo
- University of Chieti-Pescara Department of Medical, Oral and Biotechnological Sciences, Chieti, Italy
| | - Federica Altieri
- Sapienza University of Rome, Department of Oral and Maxillofacial Sciences, Rome, Italy
| | - Michele Cassetta
- Sapienza University of Rome, Department of Oral and Maxillofacial Sciences, Rome, Italy
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Abstract
The purpose of this article is not to discuss the success of short dental implants versus standard/long dental implants, but to compare short dental implants with standard/long dental implants in areas that necessitated adjunctive bone grafting or augmentation procedures and as a way to avoid the need for advanced surgical procedures and their associated risks. It can be concluded that short dental implants are a viable alternative in sites that would have required additional complex and costly augmentation procedures. Short dental implants resulted in comparable survival and success rates with faster, less expensive treatment with fewer surgical complications and morbidity.
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Affiliation(s)
- Steven R Schwartz
- Private Practice: NY Oral & Maxillofacial Surgeon, PC, 2844 Ocean Parkway, Brooklyn, NY 11235, USA; Department of Oral & Maxillofacial Surgery, Woodhull Medical Center, 760 Broadway 2c320, Brooklyn, NY 11206, USA.
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12
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Wieczorek K, Harzer W, Wehrbein H, Moergel M, Kunkel M, Jung BA. Predictive values of resonance frequency analysis as a diagnostic tool in palatal implant loss. Angle Orthod 2019; 89:721-726. [PMID: 30883188 DOI: 10.2319/081118-592.1] [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] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES To determine the diagnostic value of resonance frequency analysis (RFA) in predicting palatal implant (PI) loss. MATERIALS AND METHODS RFA values of 32 patients (study center at Mainz and Dresden) were evaluated in a prospective randomized controlled trial addressing clinical performance of two loading concepts on PI (Orthosystem, Straumann, Basel, Switzerland). Group 1: conventional loading after a 12-week healing period vs group 2: immediate loading within one week after insertion. Stability was assessed by RFA after surgical insertion (T1), one week (T2), and 12 weeks (T3) later. RESULTS All 32 PI were clinically stable after surgical insertion; 14 PI were loaded conventionally and 18 immediately. One implant in group 1 was lost 6 weeks after insertion. One drop-out was registered in group 2. One false positive and three false negative implant stability quotients (ISQ) were observed. ISQ values of clinically stable PI in group 1 were 67.2 (SD ± 9.5) at T1, 62.3 (SD ± 11.7) at T2, and 68.2 (SD ± 5.5) at T3. Group 2 showed 67.1 (SD ± 11.7) at T1, 65.4 (SD ± 10.4) at T2, and 72.3 (SD ± 5.6) at T3. Differences between groups were not statistically significant for starting time (P = .88) and change from T1 to T2: 0.08 but were significant from T1 to T3: P = .04; (regression analysis). CONCLUSIONS RFA had no sensitivity for prediction of stability. General decrease after primary stability and increase with secondary stability gives support for specificity. Within the limits of the study, only the diagnostic value of RFA identifying stable palatal implants could be confirmed.
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Abstract
PURPOSE This prospective cohort study assessed the effect of bone quality on the primary and secondary stability of single short implants placed in the posterior region. MATERIALS AND METHODS A total of 39 short implants (4.1 × 6-mm long) were placed in the posterior region of the maxilla or mandible in 18 patients. Bone quality was classified into type I, II, III, or IV as assessed intrasurgically. Primary implant stability was measured with insertion torque, damping capacity (PTV values), and resonance frequency analysis (ISQ values). Secondary stability was measured by ISQ and PTV at abutment installation. Data were analyzed by using repeated-measures ANOVA and Tukey's test, Kruskall-Wallis test, and Spearman correlation tests. RESULTS Implants placed in bone type IV had significant lower insertion torque and ISQ values as well as higher PTV values than in bone types I to II (P < 0.05). The mean ISQ values were higher at abutment installation than at implant placement (P < 0.05), regardless the bone type. The assessment methods of implant stability showed a moderate correlation. CONCLUSIONS Bone quality influences both the primary and secondary stability of single short implants in the posterior region.
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Cruz RS, Lemos CADA, Batista VEDS, Oliveira HFFE, Gomes JMDL, Pellizzer EP, Verri FR. Short implants versus longer implants with maxillary sinus lift. A systematic review and meta-analysis. Braz Oral Res 2018; 32:e86. [PMID: 30231176 DOI: 10.1590/1807-3107bor-2018.vol32.0086] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 07/17/2018] [Indexed: 11/22/2022] Open
Abstract
This study compared the survival rate of dental implants, amount of marginal bone loss, and rates of complications (biological and prosthetic) between short implants and long implants placed after maxillary sinus augmentation. This systematic review has been registered at PROSPERO under the number (CRD42017073929). Two reviewers searched the PubMed/MEDLINE, Embase, LILACS, and Cochrane Library databases. Eligibility criteria included randomized controlled trials, comparisons between short implants and long implants placed after maxillary sinus augmentation in the same study, and follow-up for >6 months. The Cochrane Collaboration's tool for assessing the risk of bias in randomized trials was used to assess the quality and risk of bias of the included studies. The search identified 1366 references. After applying the inclusion criteria, 11 trials including 420 patients who received 911 dental implants were considered eligible. No significant difference was observed in the survival rate [p = 0.86; risk ratio (RR): 1.08; 95% confidence interval (CI): 0.46-2.52] or in the amount of marginal bone loss (p = 0.08; RR: -0.05; 95%CI: -0.10 to 0.01). However, higher rates of biological complications for long implants associated with maxillary sinus augmentation were observed (p < 0.00001; RR: 0.21; 95%CI: 0.10-0.41), whereas a higher prosthetic complication rate for short implants was noted (p = 0.010; RR: 3.15; 95%CI: 1.32-7.51). Short implant placement is an effective alternative because of fewer biological complications and similar survival and marginal bone loss than long implant placement with maxillary sinus augmentation. However, the risk of mechanical complications associated with the prostheses fitted on short implants should be considered.
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Affiliation(s)
- Ronaldo Silva Cruz
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Universidade de São Paulo, Araçatuba, SP, Brazil
| | | | - Victor Eduardo de Souza Batista
- Department Prosthodontics, Presidente Prudente Dental School, Universidade do Oeste Paulista, Presidente Prudente, SP, Brazil
| | | | - Jéssica Marcela de Luna Gomes
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Universidade de São Paulo, Araçatuba, SP, Brazil
| | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Universidade de São Paulo, Araçatuba, SP, Brazil
| | - Fellippo Ramos Verri
- Department of Dental Materials and Prosthodontics, Aracatuba Dental School, Universidade de São Paulo, Araçatuba, SP, Brazil
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15
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Shilpa BS, Vasudevan SD, Bhongade ML, Baliga V, Pakhare VV, Dhadse PV. Evaluation of survival of 8 mm-length implants in posterior resorbed ridges: A pilot study. J Indian Soc Periodontol 2018; 22:334-339. [PMID: 30131626 PMCID: PMC6077961 DOI: 10.4103/jisp.jisp_368_17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Context Rehabilitation of jaws with reduced bone height is technically demanding and expensive. Short implants are emerging as an alternate in such cases. Aim This study aimed to evaluate the survival of implants of 8 mm in length (short implants), clinically and radiographically, in posterior resorbed ridges. Materials and Methods A total of 11 patients with single missing posterior tooth, having 9-10 mm of residual bone height determined using radiographs, were selected for the study. Twelve implants of 8 mm length were inserted in the resorbed alveolar ridges following standard operating procedure. A second-stage surgery was performed 4-6 months after implant placement for placement of gingival former. This was followed by placement of prosthesis. Twelve months after prosthesis placement, all the patients were examined clinically and radiographically. Results According to Albrektsson et al.'s criteria, all implants were successful with mean bone loss of 1.1 ± 0.32 mm mesially and 0.83 ± 0.35 mm distally with healthy gingival condition at 12-month follow-up. Conclusion Short implants (8 mm in length) can be a viable alternative in cases of atrophic alveolar ridges.
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Affiliation(s)
| | | | - Manohar Laxman Bhongade
- Department of Periodontics, Sharad Pawar Dental College, DMIMS (DU), Wardha, Maharashtra, India
| | - Vidya Baliga
- Department of Periodontics, Sharad Pawar Dental College, DMIMS (DU), Wardha, Maharashtra, India
| | - Vikas Vilas Pakhare
- Department of Periodontics, Sharad Pawar Dental College, DMIMS (DU), Wardha, Maharashtra, India
| | - Prasad Vijayrao Dhadse
- Department of Periodontics, Sharad Pawar Dental College, DMIMS (DU), Wardha, Maharashtra, India
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Tolentino da Rosa de Souza P, Binhame Albini Martini M, Reis Azevedo-Alanis L. Do short implants have similar survival rates compared to standard implants in posterior single crown?: A systematic review and meta-analysis. Clin Implant Dent Relat Res 2018; 20:890-901. [PMID: 30051949 DOI: 10.1111/cid.12634] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/13/2018] [Accepted: 05/14/2018] [Indexed: 12/18/2022]
Abstract
BACKGROUND Short implants have been presented as an option for posterior rehabilitation in cases of poor bone height. PURPOSE To compare the survival rate of short implants and standard implants when used in posterior single crowns, in addition to reporting marginal bone loss, prosthetic failures, and surgical complications. MATERIALS AND METHODS Electronic search (PubMed, LILACS, Cochrane Library, Scopus, and Web of Science) and hand search were performed to identify all randomized controlled trials (RCTs) and controlled clinical trials (CCTs) that evaluated both short and standard implants in posterior single crowns. RESULTS Out of 345 articles identified by both electronic and hand search, four studies were selected (one CCT and three RCTs). The meta-analysis for the survival rate showed that there was no significant difference between the short implants and the standard ones (P = 1.00; RR:1.00; CI:0.97-1.03) performed with three RCTs for a one-year follow-up. The mean marginal bone loss ranged from 0.1 mm to 0.54 mm. Only one study reported the presence of prosthetic failures and surgical complications. CONCLUSIONS The survival rate of short implants was similar to the standard ones in posterior single crowns, for the one-year follow-up period. They also presented low surgical complications, prosthetic failures and marginal bone loss, being a predictable treatment for single rehabilitation in posterior tooth loss.
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Affiliation(s)
| | - Milena Binhame Albini Martini
- Graduate Program in Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
| | - Luciana Reis Azevedo-Alanis
- Graduate Program in Dentistry, School of Life Sciences, Pontifícia Universidade Católica do Paraná, Curitiba, Brazil
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Zadeh HH, Guljé F, Palmer PJ, Abrahamsson I, Chen S, Mahallati R, Stanford CM. Marginal bone level and survival of short and standard-length implants after 3 years: An Open Multi-Center Randomized Controlled Clinical Trial. Clin Oral Implants Res 2018; 29:894-906. [DOI: 10.1111/clr.13341] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/15/2018] [Accepted: 02/17/2018] [Indexed: 11/26/2022]
Affiliation(s)
| | - Felix Guljé
- Private practice “de Mondhoek”; Apeldoorn The Netherlands
| | | | - Ingemar Abrahamsson
- Department of Periodontology; The Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
| | - Stephen Chen
- Department of Periodontics; University of Melbourne; Melbourne Vic. Australia
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Furuya Y, Norizuki Y, Yajima Y. A Case of Simultaneous Ectopic Tooth Extraction and Removal of Migrated Dental Implant from Maxillary Sinus. THE BULLETIN OF TOKYO DENTAL COLLEGE 2018; 56:253-8. [PMID: 26657524 DOI: 10.2209/tdcpublication.56.253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
When a dental implant migrates to the maxillary sinus it should be extracted immediately as it may cause sinusitis or further migrate to one of the other paranasal sinuses. Although usually detected due to symptoms such as nasal obstruction, nasal discharge, and nasal bleeding, an ectopic tooth in the maxillary sinus can sometimes be revealed incidentally on radiographic examination. Here, we report a case of simultaneous extraction of a dental implant that had migrated to the maxillary sinus and removal of an ectopic tooth that had arisen in the same location. The patient was a 73-year-old man who had received the implant to replace the first left maxillary molar at a local dental office. The implant had subsequently migrated to the left maxillary sinus and the patient was referred to us for its removal. On locating the implant on a CT scan at our hospital, an ectopic tooth was also observed at the base of the maxillary sinus. With patient consent, the decision was made to remove the ectopic tooth and extract the implant simultaneously. Excision of the lateral wall of the maxillary sinus allowed easy extraction of the implant. The ectopic tooth was removed by slightly expanding a fenestration in the sinus wall. Ectopic teeth in the maxillary sinus are sometimes put on follow-up if asymptomatic. Removal should be considered, however, if there is a risk of it becoming infected due to implantation-induced inflammation.
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Affiliation(s)
- Yoshitaka Furuya
- Department of Oral and Maxillofacial Implantology, Tokyo Dental College
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19
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Lee JS, Lee JS, Kang MH, Jung UW, Choi SH, Cho KS. Proof-of-concept study of vertical augmentation using block-type allogenic bone grafts: A preclinical experimental study on rabbit calvaria. J Biomed Mater Res B Appl Biomater 2018; 106:2700-2707. [PMID: 29411504 DOI: 10.1002/jbm.b.34087] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 12/26/2017] [Accepted: 01/20/2018] [Indexed: 12/22/2022]
Abstract
This study aimed to quantify the healing following vertical augmentation of allogenic bone blocks with/without recombinant human bone morphogenetic protein-2 (rhBMP-2) on rabbit calvaria. Experiments were performed using allogenic bone blocks which were grafted bilaterally with or without rhBMP-2 on 20 rabbit calvaria, and these animals were divided to four groups according to the use of rhBMP-2 and healing periods (2 and 8 weeks; n = 10 in each group). Onlay-type bone blocks (8 mm in diameter and 5 mm high) were fixed with a self-tapping screw after removing the cortex in the control group, and the same protocol was applied with the addition of soaking the bone blocks with rhBMP-2 for 15 min in the test group. Radiographic and histologic analyses were performed after 2 or 8 weeks to evaluate the volumetric stability and bone regeneration within the grafted area. The radiographic analysis revealed that the height of the allogenic bone block decreased but its volume was maintained from 2 to 8 weeks in both the control and test groups. The histologic results demonstrated a statistically significant increase in new bone area in the test group, especially in the lower region adjacent to the preexisting calvarial floor. The amount of newly formed bone in all regions of the augmented bone blocks in both the control and test groups was greater at 8 weeks than at 2 weeks. In conclusion, the vertically grafted allogenic bone block maintained its volume with new bone formation, and this was accelerated by the addition of rhBMP-2. These findings indicate that allogenic bone block soaked with rhBMP-2 could be a useful candidate biomaterial for vertical augmentation. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 2700-2707, 2018.
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Affiliation(s)
- Ji-Sun Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Jung-Seok Lee
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Myung-Hun Kang
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Ui-Won Jung
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Seong-Ho Choi
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
| | - Kyoo-Sung Cho
- Department of Periodontology, Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University, Seoul, Korea
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20
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Chitumalla R, Halini Kumari KV, Mohapatra A, Parihar AS, Anand KS, Katragadda P. Assessment of Survival Rate of Dental Implants in Patients with Bruxism: A 5-year Retrospective Study. Contemp Clin Dent 2018; 9:S278-S282. [PMID: 30294158 PMCID: PMC6169261 DOI: 10.4103/ccd.ccd_258_18] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background: Dental implants are associated with failure such as early or late failure. Systemic conditions such as diabetes, hypertension, and bruxism affect the success rate. The present study was conducted to assess complications in dental implants in bruxism patients. Materials and Methods: This 5-year retrospective study was conducted on 450 patients (640 dental implants) who received implants during the period and followed up for 5 years from June 2010 to June 2016. Among these patients, 124 had bruxism habit. Dental radiographs or patients' recalled records were evaluated for the presence of complications such as fracture of implant, fracture of ceramic, screw loosening, screw fracture, and decementation of unit. Results: In 240 males and 210 females, 380 implants and 260 implants were inserted, respectively. The difference was statistically nonsignificant (P = 0.1). A total of 145 screw-type and 130 cemented-type fixations had complications. The difference was statistically nonsignificant (P = 0.5). Complications were seen in single crown (45), partial prostheses (125), and complete prostheses (105). The difference was statistically significant (P = 0.012). The common complication was fracture of ceramic (70) in cemented-type fixation and fracture of ceramic (85) in screw-type fixation. The difference was statistically significant (P = 0.01). Forty-two single crowns showed decementation, 85 partial prostheses had fracture of ceramic/porcelain, and 50 complete prostheses showed fracture of ceramic/porcelain. The failure rate was 42.9%. Survival rate of dental implants in males with bruxism habit was 90% after 1 year, 87% after 2 years, 85% after 3 years, 75% after 4 years, and 72% after 5 years. Survival rate of dental implants in females with bruxism habit was 92% after 1 year, 90% after 2 years, 85% after 3 years, 75% after 4 years, and 70% after 5 years. The difference among genders was statistically nonsignificant (P = 0.21). Conclusion: Bruxism is a parafunctional habit which affects the survival rate of dental implants. There is requirement to follow certain specific protocols in bruxism patients to prevent the developing complications.
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Affiliation(s)
- Rajkiran Chitumalla
- Prosthodontics Division Qaseem Private Colleges, Buraidah, Kingdom of Saudi Arabia
| | - K V Halini Kumari
- Department of Prsothodontics, Sree Sai Dental College and Research Institute, Srikakulam, Andhra Pradesh, India
| | - Abhilash Mohapatra
- Department of Prosthodontics, Institute of Dental Sciences, Siksha "O" Anusandhan (Deemed to be University), Bhubaneswar, Orissa, India
| | - Anuj Singh Parihar
- Department of Periodontics, RKDF Dental College and Research Centre, Bhopal, Madhya Pradesh, India
| | - K S Anand
- Department of Prosthodontics, Kannur Dental College, Anjarekandy, Kannur, Kerala, India
| | - Padmavathi Katragadda
- Department of Periodontics, Mallareddy Institute of Dental Sciences, Hyderabad, Telangana, India
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21
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Hingsammer L, Watzek G, Pommer B. The influence of crown-to-implant ratio on marginal bone levels around splinted short dental implants: A radiological and clincial short term analysis. Clin Implant Dent Relat Res 2017; 19:1090-1098. [PMID: 29024303 DOI: 10.1111/cid.12546] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 08/06/2017] [Accepted: 09/15/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND The amount of marginal bone resorption around dental implants is considered to have a significant impact on implant stability as well as implant survival rates. PURPOSE The aim of this prospective study was to investigate the influence of prosthetic as well as patient specific factors on marginal bone loss around short dental implants. MATERIALS AND METHODS Seventy-six implants, which supported splinted crowns were included for investigation. All implants were from the same type and had an intraosseous length of 6.5 mm and a diameter of 4.0 mm. Twenty implants were additionally splinted onto longer ones. Measurements of marginal bone loss were performed at a mean of 12.38 months after prosthetic loading and the mean follow-up for clinical evaluation was 20.52 months. RESULTS Overall two implant failures were recorded, revealing a survival rate of 97.3%. Marginal bone resorption around 72 short implants measured 0.71 mm (SD: 0.74 mm) and was found to have a strong correlation with calculated Crown-to-Implant ratio (r = .71; P < .001). Age, gender, insertion torque, implant surface area, location, position, bone quality, and insertion torque did not influence peri-implant bone loss after one year of loading. CONCLUSION Within the limitations of the study, it is suggested that Crown-to-Implant ratios should not exceed 1.7 to avoid increased early marginal bone loss.
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Affiliation(s)
- Lukas Hingsammer
- University Hsopital Zurich, Department of Oral and Maxillofacial Surgery, Frauenklinikstrasse 24, 8032 Zurich, Switzerland.,Oral Surgeon, Academy of Oral Implantology, Lazarettgasse 19/DG, 1090 Vienna, Austria
| | - Georg Watzek
- Oral Surgeon, Academy of Oral Implantology, Lazarettgasse 19/DG, 1090 Vienna, Austria
| | - Bernhard Pommer
- Oral Surgeon, Academy of Oral Implantology, Lazarettgasse 19/DG, 1090 Vienna, Austria
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22
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Edher F, Nguyen CT. Short dental implants: A scoping review of the literature for patients with head and neck cancer. J Prosthet Dent 2017; 119:736-742. [PMID: 28927926 DOI: 10.1016/j.prosdent.2017.06.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 06/06/2017] [Accepted: 06/08/2017] [Indexed: 10/18/2022]
Abstract
STATEMENT OF PROBLEM Dental implants can be essential in the rehabilitation of various cancer defects, but their ideal placement can be complicated by the limited dimensions of the available host bone. Surgical interventions developed to increase the amount of bone are not all predictable or successful and can sometimes be contraindicated. Short dental implants have been suggested as an alternative option in sites where longer implants are not possible. Whether they provide a successful treatment option is unclear. PURPOSE The purpose of this study was to review the literature on short dental implants and assess whether they are a viable definitive treatment option for rehabilitating cancer patients with deficient bone. MATERIAL AND METHODS A scoping review of the literature was performed, including a search of established periodontal textbooks for articles on short dental implants combined with a search of PubMed, MEDLINE, EMBASE, Web of Science, and Cochrane Database of Systematic Reviews. A search for all literature published before June 2016 was based on the following keywords: ['dental implants' OR 'dental implantation, endosseous' OR 'dental prosthesis, implant supported'] AND [short]. RESULTS The minimum acceptable implant length has been considered to be 6 mm. The survival rates of short implants varied between 74% and 96% at 5 years, depending on factors such as the quality of the patient's bone, primary stability of the implant, clinician's learning curve, and implant surface. Short implants can achieve results similar to those of longer implants in augmented bone and offer a treatment alternative that could reduce the need for invasive surgery and associated morbidity and be safer and more economical. CONCLUSIONS Short dental implants (6 mm to 8 mm) can be used successfully to support single or multiple fixed reconstructions or overdentures in atrophic maxillae and mandibles. The use of short dental implants lessens the need for advanced and complicated surgical bone augmentation procedures, which reduces complications, costs, treatment time, and morbidity. Short implants could be an alternative in the rehabilitation of patients with cancer.
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Affiliation(s)
- Faraj Edher
- Graduate student, Faculty of Dentistry, University of British Columbia, Vancouver, British Columbia, Canada
| | - Caroline T Nguyen
- Assistant Professor, Department of Oral Health Sciences, University of British Columbia; and Provincial Practice Leader in Prosthodontics, Department of Oral Oncology and Dentistry, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.
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23
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Borba M, Deluiz D, Lourenço EJV, Oliveira L, Tannure PN. Risk factors for implant failure: a retrospective study in an educational institution using GEE analyses. Braz Oral Res 2017; 31:e69. [PMID: 28832716 DOI: 10.1590/1807-3107bor-2017.vol31.0069] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 06/07/2017] [Indexed: 11/22/2022] Open
Abstract
This study aimed to evaluate dental implant outcomes and to identify risk factors associated with implant failure over 12 years via dental records of patients attending an educational institution. Dental records of 202 patients receiving 774 dental implants from 2002 to 2014 were analyzed by adopting a more reliable statistical method to evaluate risk factors with patients as the unit [generalized estimating equation (GEE)]. Information regarding patient age at implantation, sex, use of tobacco, and history of systemic diseases was collected. Information about implant location in the arch region and implant length, diameter, and placement in a grafted area was evaluated after 2 years under load. Systemic and local risk factors for early and late implant failure were studied. A total of 18 patients experienced 25 implant failures, resulting in an overall survival rate of 96.8% (2.84% and 0.38% early and late implant failures, respectively). The patient-based survival rate was 91.8%. GEE univariate and multivariate analyses revealed that a significant risk factor for implant failure was the maxillary implant (p = 0.006 and p = 0.014, respectively). Bone grafting appeared to be a risk factor for implant failure (p = 0.054). According to GEE analyses, maxillary implants had significantly worse outcomes in this population and were considered to be a risk factor for implant failure. Our results suggested that implants placed in a bone augmentation area had a tendency to fail.
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Affiliation(s)
- Marcelo Borba
- Universidade Veiga de Almeida - UVA, School of Dentistry, Rio de Janeiro, RJ, Brazil
| | - Daniel Deluiz
- Universidade Estadual do Rio de Janeiro - UERJ, School of Dentistry, Department of Periodontology, Rio de Janeiro, RJ, Brazil
| | | | - Luciano Oliveira
- Pontifícia Universidade Católica do Rio de Janerio - PUC-RJ, Department of Implantology, Rio de Janeiro, RJ, Brazil
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Albanese M, Ricciardi G, Luciano U, Donadello D, Lucchese A, Gelpi F, Zangani A, De Santis D, Rizzini A, Rossetto A, Bertossi D. Alveolar splitting with Piezosurgery®, bone bank grafts and NobelActive implants as an alternative to major bone grafting for maxillary reconstruction. ACTA ACUST UNITED AC 2017; 68:3-10. [PMID: 28677938 DOI: 10.23736/s0026-4970.17.04006-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Piezosurgery® represents a novel alternative technique. The Piezosurgery® is well tolerated and permits a large number of applications in described literature. The principle of Piezosurgery® consists into inducing micro-vibrations to a metallic insert with a particular custom. The aim of this article is to study and to evaluate the use of NobelActive implants in combination with piezosurgical split-crest technique in severe atrophy of the upper maxilla. This approach allows avoiding the use of onlay grafts, due to rise the trasversal width of the crestal bone, which could have more complications and uncertain prognosis. This technique allows reducing timing of implant insertion because it is not necessary to wait for the graft to heal. METHODS Ten patients (age 45-58) are selected, presenting from class 4 to 5 by Cawood and Howell of jaws. Those underwent piezosurgical split-crest technique and simultaneous implants surgery and bone grafts. Preoperative X-ray evaluation included standard X-panoramic and CT Dental-scan. Standard chemoprophylaxis was administered to each patient. The piezosurgical split-crest procedure was combined with tissue bank fresh frozen chips and double-layer collagen membrane to improve the thickness of alveolar bone and simultaneous implant surgery. Every patient received simultaneously from 3 to 6 implants which diameter was 4.3 mm and length 10-11.5 mm. Healing abutments have been applied at 5 months from the first procedure. RESULTS Patients were clinically monitored, and marginal bone changes were calculated using periapical radiographs, which were taken with O-ring technique at placement and upon subsequent appointments and a 1-mm measurement grid for marginal bone remodeling, again at baseline and thereafter 3 months within loading. Cumulative implant survival was 97.8% (N.=45). Mean marginal bone resorption (SD) was 1.19 (1.01) mm for the early loading group after 1 year. The use of NobelActive implants seem to reduce peak stress in both cortical and trabecular bone. CONCLUSIONS The use of NobelActive implants was revealed ideal in patients presenting jaw atrophy. The tapered designs show an ability to dissipate the interfacial stresses of bone, therefore improving the stability and the osteointegration if used in association to split crest made with piezosurgical device.
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Affiliation(s)
- Massimo Albanese
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Giulia Ricciardi
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Umberto Luciano
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Dario Donadello
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Alessandra Lucchese
- Department of Orthodontics, Vita Salute San Raffaele University, Milan, Italy.,Unit of Dentistry, Division of Orthodontics, Research Area in Dentofacial Orthopedics and Orthodontics, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Federico Gelpi
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Alessandro Zangani
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Daniele De Santis
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Alessandro Rizzini
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Alberto Rossetto
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy
| | - Dario Bertossi
- Section of Oral and Maxillofacial Surgery, Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, University of Verona, Verona, Italy -
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25
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Li X, Xu P, Xu X, Liu S. The application of a delayed expansion technique for horizontal alveolar ridge augmentation in dental implantation. Int J Oral Maxillofac Surg 2017; 46:1451-1457. [PMID: 28663017 DOI: 10.1016/j.ijom.2017.05.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 03/27/2017] [Accepted: 05/26/2017] [Indexed: 11/18/2022]
Abstract
The aim of this study was to evaluate the application of delayed expansion of the alveolar ridge in dental implantation. This method avoids the need to harvest autogenous bone and the requirement to fix a block with screws, and could help prevent the uncontrolled fracture and avascular necrosis that may result from the traditional alveolar split. Eighteen patients and 43 implants were included in this retrospective study. The width of the alveolar ridge was measured before implantation, immediately after implantation, and after the final restoration. The width increased significantly after the insertion of implants and decreased slightly after bone remodelling. Overall, the width of the alveolar ridge increased by 2.37±1.44mm on average, ranging from -0.20mm to 5.75mm. The results suggest the use of delayed expansion for horizontal alveolar bone augmentation; however, the maxillary premolar area may not be a suitable site.
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Affiliation(s)
- X Li
- Department of Oral Implantation, Affiliated Haikou Hospital, Xiangya Medical School, Central South University, Hainan Provincial Stomatology Centre, Haikou, China
| | - P Xu
- Department of Oral Implantation, Affiliated Haikou Hospital, Xiangya Medical School, Central South University, Hainan Provincial Stomatology Centre, Haikou, China.
| | - X Xu
- Department of Oral and Maxillofacial Surgery, Kunming Medical University, Kunming, China
| | - S Liu
- Department of Oral Implantation, Affiliated Haikou Hospital, Xiangya Medical School, Central South University, Hainan Provincial Stomatology Centre, Haikou, China
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26
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Esfahrood ZR, Ahmadi L, Karami E, Asghari S. Short dental implants in the posterior maxilla: a review of the literature. J Korean Assoc Oral Maxillofac Surg 2017; 43:70-76. [PMID: 28462189 PMCID: PMC5410430 DOI: 10.5125/jkaoms.2017.43.2.70] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 04/24/2016] [Accepted: 05/04/2016] [Indexed: 01/03/2023] Open
Abstract
The purpose of this study was to perform a literature review of short implants in the posterior maxilla and to assess the influence of different factors on implant success rate. A comprehensive search was conducted to retrieve articles published from 2004 to 2015 using short dental implants with lengths less than 10 mm in the posterior maxilla with at least one year of follow-up. Twenty-four of 253 papers were selected, reviewed, and produced the following results. (1) The initial survival rate of short implants in the posterior maxilla was not related to implant width, surface, or design; however, the cumulative success rate of rough-surface short implants was higher than that of machined-surface implants especially in performance of edentulous dental implants of length <7 mm. (2) While bone augmentation can be used for rehabilitation of the atrophic posterior maxilla, short dental implants may be an alternative approach with fewer biological complications. (3) The increased crown-to-implant (C/I) ratio and occlusal table (OT) values in short dental implants with favorable occlusal loading do not seem to cause peri-implant bone loss. Higher C/I ratio does not produce any negative influence on implant success. (4) Some approaches that decrease the stress in posterior short implants use an implant designed to increase bone-implant contact surface area, providing the patient with a mutually protected or canine guidance occlusion and splinting implants together with no cantilever load. The survival rate of short implants in the posterior edentulous maxilla is high, and applying short implants under strict clinical protocols seems to be a safe and predictable technique.
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Affiliation(s)
- Zeinab Rezaei Esfahrood
- Department of Periodontics, School of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Loghman Ahmadi
- Department of Periodontics, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Elahe Karami
- Department of Periodontics, School of Dentistry, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Shima Asghari
- International Branch, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Pimentel MJ, Silva WJD, Del Bel Cury AA. Short implants to support mandibular complete dentures - photoelastic analysis. Braz Oral Res 2017; 31:e18. [PMID: 28273197 DOI: 10.1590/1807-3107bor-2017.vol31.0018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 12/12/2016] [Indexed: 11/21/2022] Open
Abstract
This study evaluated the stress behavior around short implants in edentulous atrophic mandibles. Six groups included implants with two diameters regular and wide (4 and 5 mm) and three lengths (5, 7 and 9 mm) as follows: Ci9 (9 x 4 mm), Ci7 (7 x 4 mm), Ci5 (5 x 4 mm), Wi9 (9 x 5 mm), Wi7 (7 x 5 mm) and Wi5 (5 x 5 mm). These groups were compared to the control group CG (11 x 4 mm). The analysis was performed with the photoelastic method (n = 6). Each model comprised 4 implants with the same length and diameter connected by a chromium-cobalt bar that simulates a fixed denture. A 0.15 kg force was applied at the end of the cantilever (15 mm), and the maximum shear stress was recorded around the distal and subsequent implants. The stress values were determined, and the quantitative data (Fringes®) were submitted to statistical analysis with one-way ANOVA and the Dunnett test (p < 0.05). It was observed that the reduction in implant length increased stress values with a significant difference (p < 0.05) between CG Ci7 and Ci5, while the increase in implant diameter reduced the stress values without any differences found between short and long implants. Implants with 5 and 7 mm with regular diameter increased stress levels while short implants with larger diameters experienced similar stress to that of longer implants.
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Affiliation(s)
- Marcele Jardim Pimentel
- Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil
| | - Wander José da Silva
- Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil
| | - Altair Antoninha Del Bel Cury
- Universidade de Campinas - UNICAMP, Piracicaba Dental School, Department of Prosthodontics and Periodontology, Piracicaba, SP, Brazil
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YILDIZ DOMANİÇ K, KAHRAMANOĞLU E, KULAK ÖZKAN Y. Bruksizm ve İmplant Başarısı: Literatür Derleme. CUMHURIYET DENTAL JOURNAL 2016. [DOI: 10.7126/cdj.58140.5000091620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Hasegawa T, Kawabata S, Takeda D, Iwata E, Saito I, Arimoto S, Kimoto A, Akashi M, Suzuki H, Komori T. Survival of Brånemark System Mk III implants and analysis of risk factors associated with implant failure. Int J Oral Maxillofac Surg 2016; 46:267-273. [PMID: 27856151 DOI: 10.1016/j.ijom.2016.10.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/29/2016] [Accepted: 10/26/2016] [Indexed: 11/19/2022]
Abstract
The purpose of this study was to retrospectively investigate the outcomes of Brånemark System Mk III TiUnite/Groovy implants placed in patients at Kobe University Hospital. Various risk factors for implant failure, including mechanical coupling, were investigated by univariate and multivariate analysis. The predictive variables investigated included age, sex, smoking habit, general health, history of radiation therapy, application of a dentomaxillary prosthesis, type of prosthesis, use of alveolar bone augmentation, site of implant insertion, mechanical coupling between implants, and the length and diameter of the implants. Of the 907 implants investigated, only 23 were unsuccessful; the overall survival rate was 96.7%. Increased age, radiation therapy, application of a removable prosthesis or dentomaxillary prosthesis, lack of mechanical coupling between implants, and shorter implants (≤8.5mm) were significant risk factors for implant failure according to univariate analysis (P<0.05). Multivariate analysis identified a significant association (P<0.05) between dental implant failure and a lack of mechanical coupling between implants (odds ratio 6.88) and shorter implants (≤8.5mm) (odds ratio 3.43). The findings of this study demonstrated multivariate relationships between various risk factors and dental implant failure.
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Affiliation(s)
- T Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
| | - S Kawabata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - D Takeda
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - E Iwata
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - I Saito
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - S Arimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - A Kimoto
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - M Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Suzuki
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
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Al-Almaie S. Immediate Dental Implant Placements Using Osteotome Technique: A Case Report and Literature Review. Open Dent J 2016; 10:367-74. [PMID: 27583046 PMCID: PMC4974829 DOI: 10.2174/1874210616021001367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 05/12/2016] [Accepted: 06/20/2016] [Indexed: 11/22/2022] Open
Abstract
This clinical case describes the effect of the osteotome technique on the osseointegration of a mandibular dental implant in a 42-year-old female patient with dento-alveolar bony defects and to review the literature regarding immediate implant placement using osteotome technique. The amount of bone expansion at the alveolar ridge and the marginal bone resorption from the time of implant placement to one year after the implant's functional loading were recorded clinically. The esthetic outcome for the restored implant (the gingival margin) was achieved one years after the implant's functional loading. The surgical and prosthetic sites for the implant showed no postoperative complications, and no infection or wound dehiscence was recorded during the follow-up period. The osteotome technique is good for the purpose for which it was introduced, and its advantages with immediate implant placement include reduced surgical trauma and a shorter treatment time.
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Affiliation(s)
- Saad Al-Almaie
- King Fahd Military Medical Complex, P.O. Box 946 Dhahran 31932, Saudi Arabia
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31
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Al Amri MD, Abduljabbar TS, Al-Johany SS, Al Rifaiy MQ, Alfarraj Aldosari AM, Al-Kheraif AA. Comparison of clinical and radiographic parameters around short (6 to 8 mm in length) and long (11 mm in length) dental implants placed in patients with and without type 2 diabetes mellitus: 3-year follow-up results. Clin Oral Implants Res 2016; 28:1182-1187. [DOI: 10.1111/clr.12938] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Mohammad D. Al Amri
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Tariq S. Abduljabbar
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Sulieman S. Al-Johany
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | - Mohammad Q. Al Rifaiy
- Department of Prosthetic Dental Sciences; College of Dentistry; King Saud University; Riyadh Saudi Arabia
| | | | - Abdulaziz A. Al-Kheraif
- Dental Biomaterials Research Chair; Dental Health Department, College of Applied Medical Sciences; King Saud University; Riyadh Saudi Arabia
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Siadat H, Alikhasi M, Beyabanaki E. Interim Prosthesis Options for Dental Implants. J Prosthodont 2016; 26:331-338. [DOI: 10.1111/jopr.12421] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2015] [Indexed: 11/30/2022] Open
Affiliation(s)
- Hakimeh Siadat
- Dental Implant Research Center, Dentistry Research Institute, Tehran University of Medical Sciences and Department of Prosthodontics, Faculty of Dentistry, Tehran University of Dentistry; Tehran University of Medical Sciences; Tehran Iran
| | - Marzieh Alikhasi
- Dental research center, Dentistry Research Institute, Tehran University of Medical Sciences and Department of Prosthodontics, Faculty of Dentistry; Tehran University of Medical Sciences; Tehran Iran
| | - Elaheh Beyabanaki
- Department of Prosthodontics, Faculty of Dentistry; Shahid Beheshti University of Medical Sciences; Tehran Iran
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Rehabilitation of Atrophied Low-Density Posterior Maxilla by Implant-Supported Prosthesis. J Craniofac Surg 2015; 27:e1-2. [PMID: 26674905 DOI: 10.1097/scs.0000000000002283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The rehabilitation of edentulous posterior maxilla is a challenging task that could be complicated by the availability of low-density and reduced height of alveolar bone. Patients were enrolled in this study upon the presence of type IV bone and residual bone height <5 mm in posterior maxilla. Novel procedure for transalveolar sinus floor elevation was described to insert 10 short implants in 4 patients. Neither implant failure nor prosthetic failure was observed during a follow-up of 44 ± 3 months. Mesial bone loss of 0.5 ± 0.6 mm and a distal bone loss 1.3 ± 0.9 mm were measured after 35 ± 4 months of loading.
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35
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Malmstrom H, Gupta B, Ghanem A, Cacciato R, Ren Y, Romanos GE. Success rate of short dental implants supporting single crowns and fixed bridges. Clin Oral Implants Res 2015; 27:1093-8. [DOI: 10.1111/clr.12693] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Hans Malmstrom
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - Bhumija Gupta
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - Alexis Ghanem
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - Rita Cacciato
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - Yanfang Ren
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
| | - Georgios E. Romanos
- Division of General Dentistry; Eastman Institute for Oral Health; University of Rochester; Rochester NY USA
- Department of Periodontology; Stony Brook University; Stony Brook NY USA
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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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Ajanović M, Kamber-Ćesir A, Hamzić A, Tosum S. Measurements of Implant Stability Following Sinus Lift: A Pilot Clinical Study. Acta Stomatol Croat 2015; 49:228-33. [PMID: 27688407 PMCID: PMC4993597 DOI: 10.15644/asc49/3/5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 04/17/2015] [Indexed: 12/20/2022] Open
Abstract
AIM The aim of this study was to evaluate the implant stability of Bredent Sky Blue implants of different diameters following one stage sinus lift procedure. MATERIAL AND METHODS This study included 9 male patients with an existing indication for unilateral or bilateral sinus lift procedure. As grafting materials, combination of allograft material MinerOss® cortical & cancellous and Ossceram nano were used. RESULTS All implants were considered successful and ISQ levels were measured by Osstell ISQ device. The ISQ values were from 68 to 84. The mean values of stability of Bredent Sky Blue implants of different diameters following one stage sinus lift procedure were 77.73 ± 2.93 (MD) and 77.98 ± 2.72 (VO).
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Affiliation(s)
- Muhamed Ajanović
- Department of Prosthodontics, Sarajevo University, School of Dentistry
| | - Alma Kamber-Ćesir
- Department of Prosthodontics, Sarajevo University, School of Dentistry
| | - Adis Hamzić
- Department of Prosthodontics, Sarajevo University, School of Dentistry
| | - Selma Tosum
- Department of Prosthodontics, Sarajevo University, School of Dentistry
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Replacement of missing posterior tooth with off-center placed single implant: Long-term follow-up outcomes. J Prosthet Dent 2015; 114:27-33. [DOI: 10.1016/j.prosdent.2014.12.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/19/2014] [Accepted: 12/29/2014] [Indexed: 01/16/2023]
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39
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Hentschel A, Herrmann J, Glauche I, Vollmer A, Schlegel KA, Lutz R. Survival and patient satisfaction of short implants during the first 2 years of function: a retrospective cohort study with 694 implants in 416 patients. Clin Oral Implants Res 2015; 27:591-6. [DOI: 10.1111/clr.12626] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Andreas Hentschel
- Privat Practice; Zwickau Germany
- Department of Oral and Maxillofacial Surgery (Director: Prof. Dr. Dr. Dr. h.c. Friedrich Wilhelm Neukam); University Hospital Erlangen; Friedrich Alexander Universität Erlangen-Nürnberg; Erlangen Germany
| | - Jan Herrmann
- Privat Practice; Zwickau Germany
- Department of Oral and Maxillofacial Surgery (Director: Prof. Dr. Dr. Dr. h.c. Friedrich Wilhelm Neukam); University Hospital Erlangen; Friedrich Alexander Universität Erlangen-Nürnberg; Erlangen Germany
| | - Ingmar Glauche
- Faculty of Medicine Carl Gustav Carus; Institute for Medical Informatics and Biometry (IMB); Technische Universität Dresden; Dresden Germany
| | | | - Karl Andreas Schlegel
- Department of Oral and Maxillofacial Surgery (Director: Prof. Dr. Dr. Dr. h.c. Friedrich Wilhelm Neukam); University Hospital Erlangen; Friedrich Alexander Universität Erlangen-Nürnberg; Erlangen Germany
| | - Rainer Lutz
- Department of Oral and Maxillofacial Surgery (Director: Prof. Dr. Dr. Dr. h.c. Friedrich Wilhelm Neukam); University Hospital Erlangen; Friedrich Alexander Universität Erlangen-Nürnberg; Erlangen Germany
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Thoma DS, Zeltner M, Hüsler J, Hämmerle CHF, Jung RE. EAO Supplement Working Group 4 - EAO CC 2015 Short implants versus sinus lifting with longer implants to restore the posterior maxilla: a systematic review. Clin Oral Implants Res 2015; 26 Suppl 11:154-69. [DOI: 10.1111/clr.12615] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2015] [Indexed: 11/27/2022]
Affiliation(s)
- D. S. Thoma
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Zurich Switzerland
| | - M. Zeltner
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Zurich Switzerland
| | - J. Hüsler
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Zurich Switzerland
| | - C. H. F. Hämmerle
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Zurich Switzerland
| | - R. E. Jung
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science; University of Zurich; Zurich Switzerland
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41
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Chrcanovic BR, Albrektsson T, Wennerberg A. Smoking and dental implants: A systematic review and meta-analysis. J Dent 2015; 43:487-98. [PMID: 25778741 DOI: 10.1016/j.jdent.2015.03.003] [Citation(s) in RCA: 192] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 03/03/2015] [Accepted: 03/05/2015] [Indexed: 11/30/2022] Open
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Santagata M, Guariniello L, Tartaro G. Modified Edentulous Ridge Expansion Technique and Immediate Implant Placement: A 3-Year Follow-Up. J ORAL IMPLANTOL 2015; 41:184-7. [DOI: 10.1563/aaid-joi-d-12-00308] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Restoration of the edentulous alveolar ridge with implants often requires the ridge width to be augmented to allow its placement. The aim of this study was to evaluate the split-crest technique, with subepithelial connective tissue graft used as biological barrier, in patients with narrow ridges, focusing on the status of soft and hard tissues and on implant success rate, at 36 months after implant loading. Thirteen patients (6 males and 7 females), ages 32–68 years (mean 49.4 years) with an atrophic maxillary jaw underwent modified edentulous ridge expansion technique for implant placement. A total of 33 Laser-Lok tapered internal implant, were placed in the maxilla. The following parameters were evaluated: (1) initial ridge width (time t0); (2) ridge width at the time of abutment connection (time t1); four months after implants placement, healing abutments were connected and the prosthetic rehabilitation was initiated, and all patients were evaluated clinically and radiographically with periapical radiograph at intervals of 3–6 months for the first year and annually thereafter for 3 years. The ridge width was measured with a cone beam computed tomography. The initial ridge width ranged from 3.5 mm to 7 mm (mean: 4.67 mm), while at the end of the expansion procedure the width ranged from 6.3 mm to 11.0 mm (mean: 8.2 mm). The width gain of the edentulous ridge ranged from 1.45–4.9 mm (mean: 3.5 mm). Two implants became exposed 1 month after surgery. One implant was lost before loading (3%). The diameter of failed implant was 5.8 mm and length was 10.5 mm. The remaining 32 implants were stable and free of complications at the end of the study. Thus, the implant survival rate was 97%. Because no implant failed after loading, the cumulative survival rate of loaded implants was 100%. The minimally invasive regenerative technique presented here avoids the use of bone graft, secondary surgery for soft tissue augmentation, and mechanical expansion devices. However, the follow-up period for outcome evaluation and exiguous patient's number in this series was limited.
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Affiliation(s)
- Mario Santagata
- Department of Head and Neck Pathologies, Oral Cavity and Audio-Verbal Communication, University Hospital (AOU) – Second University of Naples, Naples, Italy
| | - Luigi Guariniello
- Department of Head and Neck Pathologies, Oral Cavity and Audio-Verbal Communication, University Hospital (AOU) – Second University of Naples, Naples, Italy
| | - Gianpaolo Tartaro
- Department of Head and Neck Pathologies, Oral Cavity and Audio-Verbal Communication, University Hospital (AOU) – Second University of Naples, Naples, Italy
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Crespi R, Bruschi GB, Gastaldi G, Capparé P, Gherlone EF. Immediate Loaded Implants in Split-Crest Procedure. Clin Implant Dent Relat Res 2015; 17 Suppl 2:e692-8. [PMID: 25781900 DOI: 10.1111/cid.12316] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The aim of this study was to assess survival rate of immediate loading implants placed after split-crest technique. METHODS Thirty-six patients were enrolled in the study. They underwent placement of 93 dental implants in edentulous region after split-crest ridge expansion procedure. Implants followed an immediate loading procedure. Crestal bone levels were measured at baseline, at temporary prosthesis placement, at 1 year, and at 2 years from implant placement. RESULTS For dental implants, a survival rate of 98.92% was reported at 2-year follow-up, with a mean value bone loss of -1.02 ± 0.48. CONCLUSION This study assessed immediate loading implant placement after split-crest procedure at 2-year follow-up.
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Affiliation(s)
- Roberto Crespi
- Department of Dentistry, Vita Salute University, IRCCS San Raffaele Hospital, Milan, Italy
| | | | | | - Paolo Capparé
- Department of Dentistry, Vita Salute University, IRCCS San Raffaele Hospital, Milan, Italy
| | - Enrico F Gherlone
- Department of Dentistry, Vita Salute University, IRCCS San Raffaele Hospital, Milan, Italy
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Pabst AM, Walter C, Ehbauer S, Zwiener I, Ziebart T, Al-Nawas B, Klein MO. Analysis of implant-failure predictors in the posterior maxilla: a retrospective study of 1395 implants. J Craniomaxillofac Surg 2015; 43:414-20. [PMID: 25697051 DOI: 10.1016/j.jcms.2015.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 01/10/2015] [Accepted: 01/13/2015] [Indexed: 10/24/2022] Open
Abstract
The aim of this study was to analyze predictors for dental implant failure in the posterior maxilla. A database was created to include patients being treated with dental implants posterior to the maxillary cuspids. Independent variables thought to be predictive of potential implant failure included (1) sinus elevation, (2) implant length, (3) implant diameter, (4) indication, (5) implant region, (6) timepoint of implant placement, (7) one-vs. two-stage augmentation, and (8) healing mode. Cox regression analysis was used to evaluate the influence of predictors 1-3 on implant failure as dependent variable. The predictors 4-9 were analyzed strictly descriptively. The final database included 592 patients with 1395 implants. The overall 1- and 5-year implant survival rates were 94.8% and 88.6%, respectively. The survival rates for sinus elevation vs. placement into native bone were 94.4% and 95.4%, respectively (p = 0.33). The survival rates for the short (<10 mm), the middle (10-13 mm) and the long implants (>13 mm) were 100%, 89% and 76.8%, respectively (middle-vs. long implants p = 0.62). The implant survival rates for the small- (<3.6 mm), the middle- (3.6-4.5 mm) and the wide diameter implants (>4.5 mm) were 92.5%, 87.9% and 89.6%, respectively (p = 0.0425). None of the parameters evaluated were identified as predictor of implant failure in the posterior maxilla.
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Affiliation(s)
- Andreas Max Pabst
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany.
| | - Christian Walter
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany
| | - Sebastian Ehbauer
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany
| | - Isabella Zwiener
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center Mainz, Obere Zahlbacher Strasse 69, 55131 Mainz, Germany
| | - Thomas Ziebart
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany
| | - Bilal Al-Nawas
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany
| | - Marcus Oliver Klein
- Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Augustusplatz 2, 55131 Mainz, Germany; Private Practice, Oral and Maxillofacial Surgery, Stresemannstrasse 7-9, 40210 Düsseldorf, Germany
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45
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Bassetti MA, Bassetti RG, Bosshardt DD. The alveolar ridge splitting/expansion technique: a systematic review. Clin Oral Implants Res 2015; 27:310-24. [PMID: 25586966 DOI: 10.1111/clr.12537] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/21/2014] [Indexed: 12/01/2022]
Abstract
PURPOSE The aim of this systematic review was to evaluate clinical, radiological and histological outcomes of the alveolar ridge splitting/expansion technique (ARST) with or without GBR. MATERIALS AND METHODS A screening of two databases MEDLINE (PubMed) and EMBASE (OVID) and hand search of articles were performed. Human and animal studies reporting on dental implants placed with simultaneous ARST up to May 31st 2014 were considered. Quality assessment of selected full-text articles was performed according to the ARRIVE guidelines and the Cochrane collaboration's tool to assess risk of bias. RESULTS Overall, 18 human and six animal studies (risk of bias: high/unclear) were included in this review. No randomized controlled trials were found. Due to the heterogeneity of study designs, definitions of success criteria, outcome variables, observation times and surgical procedures, no meta-analysis was performed. Reported survival (18 studies) and success (nine studies) rates ranged from 91.7 to 100% and 88.2 to 100%, respectively, with a mean follow-up of 1-10 years. Crestal bone level changes (∆CBL) in some studies indicate slightly higher bone loss before and after loading. Histologic and histomorphometric data from six animal studies confirm the crestal bone loss, particularly at buccal sites. CONCLUSIONS Within the limitations of this review, ARST seems to be a well-functioning one-stage alternative to extended two-stage horizontal grafting procedures. Data indicate that during healing and first year of loading, increased ∆CBL particularly at buccal sites must be anticipated. Additional horizontal GBR can help to preserve buccal bone height and width.
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Affiliation(s)
- Mario A Bassetti
- Department of Periodontology, University of Bern, Bern, Switzerland
| | - Renzo G Bassetti
- Department of Oral and Maxillofacial Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Dieter D Bosshardt
- Department of Periodontology, University of Bern, Bern, Switzerland.,Robert K. Schenk Laboratory of Oral Histology, School of Dental Medicine, University of Bern, Bern, Switzerland
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Abstract
Short-length implants (<10 mm) can be used effectively in atrophic maxillae or mandibles even with crown/implant ratios that previously would have been considered excessive. Short implants can support either single or multiple units and can be used for fixed prostheses or overdentures. The use of short-length implants may avoid the need for complicated bone augmentation procedures, thus allowing patients who were either unwilling or unable for financial or medical reasons to undergo these advanced grafting techniques to be adequately treated.
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Affiliation(s)
- Steven Richard Schwartz
- Woodhull Medical and Mental Health Center, Department of Dentistry, Division of Oral and Maxillofacial Surgery, 760 Broadway, Brooklyn, New York 11206, USA; The Brooklyn Hospital Center, Department of Dentistry, Division of Oral and Maxillofacial Surgery, 121 Dekalb Avenue, Brooklyn, New York 11026, USA; Private Practice, New York Oral and Maxillofacial Surgeon, P.C. 2844 Ocean Parkway B2, Brooklyn, New York 11235, USA.
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47
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Nisand D, Renouard F. Short implant in limited bone volume. Periodontol 2000 2014; 66:72-96. [DOI: 10.1111/prd.12053] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2013] [Indexed: 12/28/2022]
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48
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Kheur M, Gokhale S, Sumanth S, Jambekar S. Staged Ridge Splitting Technique for Horizontal Expansion in Mandible: A Case Report. J ORAL IMPLANTOL 2014; 40:479-83. [DOI: 10.1563/aaid-joi-d-12-00068] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Ridge split procedures are commonly performed for horizontal augmentation of narrow ridges which would otherwise preclude implant placement. A 47-year-old patient with bilaterally edentulous posterior mandibular ridges was treated in the Department of Periodontology and Implantology, M.A. Rangoonwala College of Dental Sciences and Research Centre, employing a “staged ridge split” technique. In this technique, a simple corticotomy at the crestal, apical, and lateral aspects of the buccal cortical plate of the mandible was performed. Following this, a month later, the ridge was expanded and bone graft OssiFi containing biphasic beta-tricalcium phosphate and hydroxyappatite was placed to maintain the gap between the cortices. Thereafter, implants were placed 3 months later. A successful prosthetic rehabilitation was done following a healing phase of 3 months. This approach leads to restoration of function with a predictable outcome and minimal risk of cortical plate fracture during the ridge expansion process.
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Affiliation(s)
- Mohit Kheur
- Department of Prosthodontics and Oral & Maxillofacial Prosthesis, M.A. Rangoonwala College of Dental Sciences and Research Centre, Maharashtra, India
| | - Sneha Gokhale
- Department of Periodontology and Implantology, M.A. Rangoonwala College of Dental Sciences and Research Centre, Maharashtra, India
| | - Shivaswamy Sumanth
- Department of Periodontology and Implantology, M.A. Rangoonwala College of Dental Sciences and Research Centre, Maharashtra, India
| | - Shantanu Jambekar
- Department of Prosthodontics and Oral & Maxillofacial Prosthesis, M.A. Rangoonwala College of Dental Sciences and Research Centre, Maharashtra, India
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49
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Jeong TM, Lee JK. The Efficacy of the Graft Materials after Sinus Elevation: Retrospective Comparative Study Using Panoramic Radiography. Maxillofac Plast Reconstr Surg 2014; 36:146-53. [PMID: 27489826 PMCID: PMC4281913 DOI: 10.14402/jkamprs.2014.36.4.146] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Revised: 05/26/2014] [Accepted: 07/15/2014] [Indexed: 11/19/2022] Open
Abstract
Purpose: This study compares and evaluates the efficacy of graft materials after maxillary sinus bone grafts with autogenous tooth bone graft material (AutoBT), demineralized freeze-dried bone allograft (DFDBA) and deproteinized bovine bone mineral (DBBM). Methods: The study involved 30 sinuses in 26 patients who visited the Division of Oral and Maxillofacial Surgery, Department of Dentistry in Ajou University Hospital and received either AutoBT, DFDBA or DBBM with sinus elevation using the lateral window technique. Sinus graft height was measured before, immediately after, and six months after bone graft with panoramic radiography and the height changes of the sinus floor was compared according to the graft materials. Results: After six months, the decrease ratio of graft heights were 13.57% for AutoBT group, 14.30% for DFDBA group, and 11.92% for DBBM group. There was no statistically significant difference. Conclusion: The new maxillary sinus floor formed by the upper border of bone graft material, can repneumatize after the maxillary sinus elevation. Thus, long-term stability of sinus graft height represents an important factor for implant success. We found that the three graft materials for sinus elevation do not differ significantly and all three graft materials showed excellent resistance to maxillary sinus repneumatization. However, due to the special circumstances of the maxillary sinus and small sample, the actual difference between the three graft materials may not have been detectable. Therefore further study needs to be conducted for more reliable study results.
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Affiliation(s)
- Tae Min Jeong
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Ajou University School of Medicine
| | - Jeong Keun Lee
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Ajou University School of Medicine
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50
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Cha MS, Lee JH, Lee SW, Cho LR, Huh YH, Lee YS. Horizontal Ridge Augmentation with Piezoelectric Hinge-Assisted Ridge Split Technique in the Atrophic Posterior Mandible. Maxillofac Plast Reconstr Surg 2014; 36:124-30. [PMID: 27489822 PMCID: PMC4281899 DOI: 10.14402/jkamprs.2014.36.3.124] [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: 02/14/2014] [Revised: 03/08/2014] [Accepted: 05/08/2014] [Indexed: 12/01/2022] Open
Abstract
Onlay bone grafting, guided bone regeneration, and alveolar ridge split technique are considered reliable bone augmentation methods on the horizontally atrophic alveolar ridge. Among these techniques, alveolar ridge split procedures are technique-sensitive and difficult to perform in the posterior mandible. This case report describes successful implant placement with the use of piezoelectric hinge-assisted ridge split technique in an atrophic posterior mandible.
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Affiliation(s)
- Min-Sang Cha
- Division of Prosthodontics, Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine
| | - Ji-Hye Lee
- Division of Prosthodontics, Department of Dentistry, Uijeongbu St. Mary's Hospital, The Catholic University of Korea College of Medicine, Section of Dentistry, Seoul National University Bundang Hospital
| | - Sang-Woon Lee
- Division of Oral and Maxillofacial Surgery, Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine, Section of Dentistry, Seoul National University Bundang Hospital
| | - Lee-Ra Cho
- Department of Prosthodontics, Research Institute of Oral Science, Gangneung-Wonju National University, Section of Dentistry, Seoul National University Bundang Hospital
| | - Yoon-Hyuk Huh
- Department of Prosthodontics, Research Institute of Oral Science, Gangneung-Wonju National University, Section of Dentistry, Seoul National University Bundang Hospital
| | - You-Sun Lee
- Department of Orthodontics, Section of Dentistry, Seoul National University Bundang Hospital
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