201
|
Thoma DS, Dard MM, Hälg GA, Ramel CF, Hämmerle CHF, Jung RE. Evaluation of a biodegradable synthetic hydrogel used as a guided bone regeneration membrane: an experimental study in dogs. Clin Oral Implants Res 2011; 23:160-168. [PMID: 21692857 DOI: 10.1111/j.1600-0501.2011.02217.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To test whether or not an experimental polyethylene glycol (PEG) membrane maintains the bone graft volume and contributes to the preservation of the ridge contour in comparison with a commercially available synthetic membrane. MATERIALS AND METHODS In 18 dogs, all mandibular premolars and the first molars were extracted. Ten weeks later, acute standardized defects were prepared. The defects of four dogs were randomly assigned to three modalities: (1) PEG plus deproteinized bovine bone mineral (DBBM) (PEG), (2) a resorbable glycolide trimethylene carbonate membrane plus DBBM (PGA-TMC), and (3) DBBM alone (DBBM). These dogs were then sacrificed for the baseline measurements. The remaining defects of 14 dogs were randomly assigned to (1) PEG plus DBBM, (2) PGA-TMC plus DBBM, (3) DBBM, and (4) empty defect. The dogs were sacrificed at baseline (n=4), 4 weeks (n=7), or at 16 weeks (n=7). Mixed model regressions and the non-parametric Brunner-Langer method were applied for statistical analysis. RESULTS At baseline, equal tissue augmentation was observed in all groups. At 4 and 16 weeks, the greatest augmented area fractions were calculated for PEG (103%; 107%, respectively), followed by PGA-TMC (98%; 91%), DBBM (85%; 78%), and empty (46%; 54%), being statistically significant different (P<0.001) between PEG and empty at 4 and 16 weeks, and PEG and DBBM at 16 weeks. The overall decrease (P≤0.01) in the amount of bone graft between baseline and 16 weeks was -14% (PEG), -22% (PGA-TMC), and -23% (DBBM). CONCLUSIONS The study demonstrates that the combination of the PEG membrane with DBBM maintains the bone graft volume over time better than controls. The PEG membrane with DBBM was also the most effective method to preserve the ridge contour.
Collapse
Affiliation(s)
- Daniel S Thoma
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, Zurich, SwitzerlandInstitut Straumann AG, Basel, Switzerland
| | - Michel M Dard
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, Zurich, SwitzerlandInstitut Straumann AG, Basel, Switzerland
| | - Gian-Andrea Hälg
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, Zurich, SwitzerlandInstitut Straumann AG, Basel, Switzerland
| | - Christian F Ramel
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, Zurich, SwitzerlandInstitut Straumann AG, Basel, Switzerland
| | - Christoph H F Hämmerle
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, Zurich, SwitzerlandInstitut Straumann AG, Basel, Switzerland
| | - Ronald E Jung
- Clinic of Fixed and Removable Prosthodontics and Dental Material Science, Center for Dental Medicine, Zurich, SwitzerlandInstitut Straumann AG, Basel, Switzerland
| |
Collapse
|
202
|
Roccuzzo M, Bonino F, Bonino L, Dalmasso P. Surgical therapy of peri-implantitis lesions by means of a bovine-derived xenograft: comparative results of a prospective study on two different implant surfaces. J Clin Periodontol 2011; 38:738-45. [PMID: 21635278 DOI: 10.1111/j.1600-051x.2011.01742.x] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The aim of this prospective study was to evaluate a regenerative surgical treatment modality for peri-implantitis lesions on two different implant surfaces. MATERIALS AND METHODS Twenty-six patients with one crater-like defect, around either TPS (Control) or SLA (Test) dental implants, with a probing depth (PD) ≥6 mm and no implant mobility, were included. The implant surface was mechanically debrided and treated using a 24% EDTA gel and a 1% chlorhexidine gel. The bone defect was filled with a bovine-derived xenograft (BDX) and the flap was sutured around the non-submerged implant. RESULTS One-year follow-up demonstrated clinical and radiographic improvements. PDs were significantly reduced by 2.1±1.2 mm in the Control implants and by 3.4±1.7 mm in the Test implants. Complete defect fill was never found around Controls, while it occurred in three out of 12 Test implants. Bleeding on probing decreased from 91.1±12.4% (Control) and 75.0±30.2% (Test) to 57.1±38.5% (p=0.004) and 14.6±16.7% (p=0.003), respectively. Several deep pockets (≥6 mm) were still present after surgical therapy around Controls. CONCLUSIONS Surface characteristics may have an impact on the clinical outcome following surgical debridement, disinfection of the contaminated surfaces and grafting with BDX. Complete fill of the bony defect seems not to be a predictable result.
Collapse
Affiliation(s)
- Mario Roccuzzo
- Department of Maxillo-Facial Surgery, University of Torino, Torino, Italy.
| | | | | | | |
Collapse
|
203
|
Caneva M, Botticelli D, Pantani F, Baffone GM, Rangel Jr IG, Lang NP. Deproteinized bovine bone mineral in marginal defects at implants installed immediately into extraction sockets: an experimental study in dogs. Clin Oral Implants Res 2011; 23:106-12. [DOI: 10.1111/j.1600-0501.2011.02202.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
204
|
Han JY, Shin SI, Herr Y, Kwon YH, Chung JH. The effects of bone grafting material and a collagen membrane in the ridge splitting technique: an experimental study in dogs. Clin Oral Implants Res 2011; 22:1391-8. [DOI: 10.1111/j.1600-0501.2010.02127.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
205
|
Nam HW, Park JB, Lee JY, Rhee SH, Lee SC, Koo KT, Kim TI, Seol YJ, Lee YM, Ku Y, Rhyu IC, Park YJ, Chung CP. Enhanced Ridge Preservation by Bone Mineral Bound With Collagen-Binding Synthetic Oligopeptide: A Clinical and Histologic Study in Humans. J Periodontol 2011; 82:471-80. [DOI: 10.1902/jop.2010.100193] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
206
|
Engler-Hamm D, Cheung WS, Yen A, Stark PC, Griffin T. Ridge Preservation Using a Composite Bone Graft and a Bioabsorbable Membrane With and Without Primary Wound Closure: A Comparative Clinical Trial. J Periodontol 2011; 82:377-87. [DOI: 10.1902/jop.2010.090342] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
207
|
Munhoz EA, Bodanezi A, Cestari TM, Taga R, de Carvalho PSP, Ferreira O. Long-term rabbits bone response to titanium implants in the presence of inorganic bovine-derived graft. J Biomater Appl 2011; 27:91-8. [PMID: 21343217 DOI: 10.1177/0885328210396946] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study evaluated bone responses to titanium implants in the presence of an inorganic graft material. The bilateral mandible incisors of 24 rabbits were surgically extracted and one of the exposed sockets, chosen at random, was filled with an inorganic xenogenic bone graft (Gen-ox®), whereas the remaining socket was left to heal naturally and served as a control. After 60 days, titanium implants were inserted in the specific areas, and on days 0, 30, 60, and 180 after the implant insertions, six animals of each group were killed. Digital periapical radiography of implant region was obtained and vertical bone height (VBH) and bone density (BD) were evaluated by digital analysis system. In the undecalcified tissue cuts, bone-to-implant contact (BIC) and bone area (BA) within the limits of the implant threads were evaluated and compared statistically by means of two-way ANOVA and Tukey's test (ρ < 0.05). No significant differences were detected in VBH and BA, either between groups or between different experimental intervals. The BD was significantly higher in the experimental group than in the control group in all the intervals tested, but there were no significant differences by interval. The BIC was statistically lower in the control group on day 0; however, a significant increase was observed on days 60 and 180 (ρ < 0.05). The use of an inorganic xenograft prior to insertion of a titanium implant did not interfere with the course of osseointegration.
Collapse
Affiliation(s)
- Etiene Andrade Munhoz
- Department of Stomatology and Oral Surgery, School of Dentistry, University of São Paulo, Bauru, São Paulo, Brazil.
| | | | | | | | | | | |
Collapse
|
208
|
Deproteinized bovine bone in periodontal and implant surgery. Dent Mater 2011; 27:61-70. [DOI: 10.1016/j.dental.2010.10.017] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 10/22/2010] [Indexed: 11/18/2022]
|
209
|
Caneva M, Botticelli D, Stellini E, Souza SLS, Salata LA, Lang NP. Magnesium-enriched hydroxyapatite at immediate implants: a histomorphometric study in dogs. Clin Oral Implants Res 2010; 22:512-7. [PMID: 21143533 DOI: 10.1111/j.1600-0501.2010.02040.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the influence of magnesium-enriched hydroxyapatite (MHA) (SintLife(®)) on bone contour preservation and osseointegration at implants placed immediately into extraction sockets. MATERIAL AND METHODS In the mandibular pre-molar region, implants were installed immediately into extraction sockets of six Labrador dogs. MHA was placed at test sites, while the control sites did not receive augmentation materials. Implants were intended to heal in a submerged mode. After 4 months of healing, the animals were sacrificed, and ground sections were obtained for histomorphometric evaluation. RESULTS After 4 months of healing, one control implant was not integrated leaving n=5 test and control implants for evaluation. Both at the test and the control sites, bone resorption occurred. While the most coronal bone-to-implant contact was similar between test and control sites, the alveolar bony crest outline was maintained to a higher degree at the buccal aspect of the test sites (loss: 0.7 mm) compared with the control sites (loss: 1.2 mm), even though this difference did not reach statistical significance. CONCLUSIONS The use of MHA to fill the defect around implants placed into the alveolus immediately after tooth extraction did not contribute significantly to the maintenance of the contours of the buccal alveolar bone crest.
Collapse
Affiliation(s)
- Marco Caneva
- UNESP - Faculty of Dentistry of Araçatuba, São Paulo State University, Brazil
| | | | | | | | | | | |
Collapse
|
210
|
Araújo MG, Lindhe J. Socket grafting with the use of autologous bone: an experimental study in the dog. Clin Oral Implants Res 2010; 22:9-13. [PMID: 21091539 DOI: 10.1111/j.1600-0501.2010.01937.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND studies in humans and animals have shown that following tooth removal (loss), the alveolar ridge becomes markedly reduced. Attempts made to counteract such ridge diminution by installing implants in the fresh extraction sockets were not successful, while socket grafting with anorganic bovine bone mineral prevented ridge contraction. AIM to examine whether grafting of the alveolar socket with the use of chips of autologous bone may allow ridge preservation following tooth extraction. METHODS in five beagle dogs, the distal roots of the third and fourth mandibular premolars were removed. The sockets in the right or the left jaw quadrant were grafted with either anorganic bovine bone or with chips of autologous bone harvested from the buccal bone plate. After 3 months of healing, biopsies of the experimental sites were sampled, prepared for buccal-lingual ground sections and examined with respect to size and composition. RESULTS it was observed that the majority of the autologous bone chips during healing had been resorbed and that the graft apparently did not interfere with socket healing or processes that resulted in ridge resorption. CONCLUSION autologous bone chips placed in the fresh extraction socket will (i) neither stimulate nor retard new bone formation and (ii) not prevent ridge resorption that occurs during healing following tooth extraction.
Collapse
Affiliation(s)
- Mauricio G Araújo
- Department of Dentistry, State University of Maringá, Parana, Brazil.
| | | |
Collapse
|
211
|
Araújo MG, Linder E, Lindhe J. Bio-Oss collagen in the buccal gap at immediate implants: a 6-month study in the dog. Clin Oral Implants Res 2010; 22:1-8. [PMID: 21091538 DOI: 10.1111/j.1600-0501.2010.01920.x] [Citation(s) in RCA: 148] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND following tooth extraction and immediate implant installation, the edentulous site of the alveolar process undergoes substantial bone modeling and the ridge dimensions are reduced. objective: the objective of the present experiment was to determine whether the process of bone modeling following tooth extraction and immediate implant placement was influenced by the placement of a xenogenic graft in the void that occurred between the implant and the walls of the fresh extraction socket. MATERIAL AND METHODS five beagle dogs about 1 year old were used. The 4th premolar in both quadrants of the mandible ((4) P(4) ) were selected and used as experimental sites. The premolars were hemi-sected and the distal roots removed and, subsequently, implants were inserted in the distal sockets. In one side of the jaw, the marginal buccal-approximal void that consistently occurred between the implant and the socket walls was grafted with Bio-Oss Collagen while no grafting was performed in the contra-lateral sites. After 6 months of healing, biopsies from each experimental site were obtained and prepared for histological analyses. RESULTS the outline of the marginal hard tissue of the control sites was markedly different from that of the grafted sites. Thus, while the buccal bone crest in the grafted sites was comparatively thick and located at or close to the SLA border, the corresponding crest at the control sites was thinner and located a varying distance below SLA border. CONCLUSIONS it was demonstrated that the placement of Bio-Oss Collagen in the void between the implant and the buccal-approximal bone walls of fresh extraction sockets modified the process of hard tissue healing, provided additional amounts of hard tissue at the entrance of the previous socket and improved the level of marginal bone-to-implant contact.
Collapse
Affiliation(s)
- Mauricio G Araújo
- Department of Dentistry, State University of Maringá, Parana, Brazil.
| | | | | |
Collapse
|
212
|
Mardas N, Chadha V, Donos N. Alveolar ridge preservation with guided bone regeneration and a synthetic bone substitute or a bovine-derived xenograft: a randomized, controlled clinical trial. Clin Oral Implants Res 2010; 21:688-98. [PMID: 20636724 DOI: 10.1111/j.1600-0501.2010.01918.x] [Citation(s) in RCA: 169] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The aim of this randomized, controlled clinical trial was to compare the potential of a synthetic bone substitute or a bovine-derived xenograft combined with a collagen membrane to preserve the alveolar ridge dimensions following tooth extraction. METHODS Twenty-seven patients were randomized into two treatment groups following single tooth extraction in the incisor, canine and premolar area. In the test group, the alveolar socket was grafted with Straumann Bone Ceramic (SBC), while in the control group, Bio-Oss deproteinized bovine bone mineral (DBBM) was applied. In both groups, a collagen barrier was used to cover the grafting material. Complete soft tissue coverage of the barriers was not achieved. After 8 months, during re-entry procedures and before implant placement, the horizontal and vertical dimensions of the residual ridge were re-evaluated and trephine biopsies were performed for histological analysis in all patients. RESULTS Twenty-six patients completed the study. The bucco-lingual dimension of the alveolar ridge decreased by 1.1+/-1 mm in the SBC group and by 2.1+/-1 in the DBBM group (P<0.05). Both materials preserved the mesio-distal bone height of the ridge. No differences in the width of buccal and palatal bone plate were observed between the two groups. The histological analysis showed new bone formation in the apical part of the biopsies, which, in some instances, was in direct contact with both SBC and DBBM particles. The coronal part of the biopsies was occupied by a dense fibrous connective tissue surrounding the SBC and DBBM particles. CONCLUSION Both biomaterials partially preserved the width and the interproximal bone height of the alveolar ridge.
Collapse
Affiliation(s)
- Nikos Mardas
- Periodontology Unit, UCL - Eastman Dental Institute, London, UK
| | | | | |
Collapse
|
213
|
Bernhardt A, Lode A, Peters F, Gelinsky M. Novel ceramic bone replacement material Osbone® in a comparative in vitro study with osteoblasts. Clin Oral Implants Res 2010; 22:651-7. [DOI: 10.1111/j.1600-0501.2010.02015.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
214
|
Andrade Munhoz E, Bodanezi A, Ferreira Junior O, Mauro Granjeiro J. Bone crestal height and bone density after third-molar extraction and grafting: a long-term follow-up study. Clin Oral Investig 2010; 15:123-6. [DOI: 10.1007/s00784-010-0412-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2009] [Accepted: 03/25/2010] [Indexed: 11/28/2022]
|
215
|
Araújo MG, Liljenberg B, Lindhe J. Dynamics of Bio-Oss Collagen incorporation in fresh extraction wounds: an experimental study in the dog. Clin Oral Implants Res 2010; 21:55-64. [PMID: 20070748 DOI: 10.1111/j.1600-0501.2009.01854.x] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM The objective of this experiment was to analyze processes involved in the incorporation of Bio-Oss Collagen in host tissue during healing following tooth extraction and grafting. METHODS Five beagle dogs were used. Four premolars in the mandible ((3)P(3), (4)P(4)) were hemi-sected, the distal roots were removed and the fresh extraction socket filled with Bio-Oss Collagen. The mucosa was mobilized and the extraction site was closed with interrupted sutures. The tooth extraction and grafting procedures were scheduled in such a way that biopsies representing 1 and 3 days, as well as 1, 2 and 4 weeks of healing could be obtained. The dogs were euthanized and perfused with a fixative. Each experimental site, including the distal socket area, was dissected. The sites were decalcified in EDTA, and serial sections representing the central part of the socket were prepared in the mesio-distal plane and parallel with the long axis of the extraction socket. Sections were stained in hematoxylin and eosin and were used for the overall characteristics of the tissues in the extraction socket. In specimens representing 1, 2 and 4 weeks of healing the various tissue elements were assessed using a morphometric point counting procedure. Tissue elements such as cells, fibers, vessels, leukocytes and mineralized bone were determined. In deparaffinized sections structures and cells positive for tartrate-resistant acid phosphatase activity (TRAP), alkaline phosphatase and osteopontin were identified. RESULTS The biomaterial was first trapped in the fibrin network of the coagulum. Neutrophilic leukocytes [polymorphonuclear (PMN) cells] migrated to the surface of the foreign particles. In a second phase the PMN cells were replaced by multinuclear TRAP-positive cells (osteoclasts). The osteoclasts apparently removed material from the surface of the xenogeneic graft. When after 1-2 weeks the osteoclasts disappeared from the Bio-Oss granules they were followed by osteoblasts that laid down bone mineral in the collagen bundles of the provisional matrix. In this third phase the Bio-Oss particles became osseointegrated. CONCLUSIONS It was demonstrated that the incorporation of Bio-Oss in the tissue that formed in an extraction wound involved a series of different processes.
Collapse
Affiliation(s)
- Mauricio G Araújo
- Department of Dentistry, State University of Maringá, Parana, Brazil.
| | | | | |
Collapse
|
216
|
Nam HW, Park YJ, Koo KT, Kim TI, Seol YJ, Lee YM, Gu Y, Rhyu IC, Chung CP. The influence of membrane exposure on post-extraction dimensional change following ridge preservation technique. ACTA ACUST UNITED AC 2009. [DOI: 10.5051/jkape.2009.39.3.367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hyun-Wook Nam
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - Yoon-Jeong Park
- Department of Head and Neck Reconstruction, School of dentistry, Seoul National University, Korea
| | - Ki-Tae Koo
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - Tae-Il Kim
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - Yang-Jo Seol
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - Yong-Moo Lee
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - Young Gu
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - In-Chul Rhyu
- Department of periodontology, School of dentistry, Seoul National University, Korea
| | - Chong-Pyoung Chung
- Department of periodontology, School of dentistry, Seoul National University, Korea
| |
Collapse
|