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Gill T, Kühl S, Rawlinson S, Pippenger B, Bellon B, Shahdad S. Primary stability and osseointegration comparing a novel tapered design tissue-level implant with a parallel design tissue-level implant. An experimental in vivo study. Clin Oral Implants Res 2024. [PMID: 38819108 DOI: 10.1111/clr.14301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 06/01/2024]
Abstract
OBJECTIVES The aim of the present study was to compare a novel tapered, double-threaded self-tapping tissue-Level design implant (TLC) to a well-established parallel walled tissue-level (TL) implant in terms of primary and secondary stability over time. MATERIALS AND METHODS Test TLC (n = 10/per timepoint) and control TL (n = 10/per timepoint) implants were placed in the mandible of minipigs and left for submerged healing for 3, 6, and 12 weeks. Maximum insertion torque and implant stability quotient (ISQ) were measured for each implant at placement. Osseointegration and cortical bone maintenance were histologically evaluated by measuring total bone-to-implant contact (BIC) and first bone-to-implant contact (fBIC). RESULTS A significantly higher maximum insertion torque was measured for the test implant TLC compared to the control TL implant (57.83 ± 24.73 Ncm and 22.62 ± 23.16 Ncm, respectively; p < .001). The mean ISQ values were comparable between the two implant types (75.00 ± 6.70 for TL compared to 75.40 ± 3.20 for TLC, p = .988). BIC was comparable between both implant types at each of the evaluated time points. The fBIC was found to be significantly more coronal at 12 weeks for the TLC implant compared to the TL implant (0.31 ± 0.83 mm for TLC compared to -0.22 ± 0.85 for TL, p = .027). CONCLUSION The novel tapered tissue level design implant showed improved primary stability and an overall improved crestal bone height maintenance compared to the parallel walled design at 12 weeks.
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Affiliation(s)
- Thomas Gill
- Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Sebastian Kühl
- Department of Oral Surgery, University Center for Dental Medicine, University of Basel, Basel, Switzerland
| | - Simon Rawlinson
- Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Benjamin Pippenger
- Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Department of Preclinical Research, Institut Straumann AG, Basel, Switzerland
| | - Benjamin Bellon
- Department of Preclinical Research, Institut Straumann AG, Basel, Switzerland
- Faculty of Medicine and Health Technology, University of Tampere, Tampere, Finland
| | - Shakeel Shahdad
- Institute of Dentistry, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Department of Restorative Dentistry, the Royal London Dental Hospital, Barts Health NHS Trust, London, UK
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Wang B, Feng C, Liu Y, Mi F, Dong J. Recent advances in biofunctional guided bone regeneration materials for repairing defective alveolar and maxillofacial bone: A review. JAPANESE DENTAL SCIENCE REVIEW 2022; 58:233-248. [PMID: 36065207 PMCID: PMC9440077 DOI: 10.1016/j.jdsr.2022.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/23/2022] [Accepted: 07/28/2022] [Indexed: 11/28/2022] Open
Abstract
The anatomy of the oral and maxillofacial sites is complex, and bone defects caused by trauma, tumors, and inflammation in these zones are extremely difficult to repair. Among the most effective and reliable methods to attain osteogenesis, the guided bone regeneration (GBR) technique is extensively applied in defective oral and maxillofacial GBR. Furthermore, endowing biofunctions is crucial for GBR materials applied in repairing defective alveolar and maxillofacial bones. In this review, recent advances in designing and fabricating GBR materials applied in oral and maxillofacial sites are classified and discussed according to their biofunctions, including maintaining space for bone growth; facilitating the adhesion, migration, and proliferation of osteoblasts; facilitating the migration and differentiation of progenitor cells; promoting vascularization; providing immunoregulation to induce osteogenesis; suppressing infection; and effectively mimicking natural tissues using graded biomimetic materials. In addition, new processing strategies (e.g., 3D printing) and new design concepts (e.g., developing bone mimetic extracellular matrix niches and preparing scaffolds to suppress connective tissue to actively acquire space for bone regeneration), are particularly worthy of further study. In the future, GBR materials with richer biological functions are expected to be developed based on an in-depth understanding of the mechanism of bone-GBR-material interactions.
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Affiliation(s)
- Bing Wang
- Department of Chemistry, School of Pharmacy, North Sichuan Medical College, Nanchong, China
- Corresponding author at: Department of Chemistry, School of Pharmacy, North Sichuan Medical College, Nanchong, China.
| | - Chengmin Feng
- Department of Otorhinolaryngology & Head Neck Surgery, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Yiming Liu
- Department of Stomatology, North Sichuan Medical College, Nanchong, China
| | - Fanglin Mi
- Department of Stomatology, North Sichuan Medical College, Nanchong, China
- Department of Stomatology, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
- Corresponding author at: Department of Stomatology, North Sichuan Medical College, Nanchong, China.
| | - Jun Dong
- Department of Chemistry, School of Pharmacy, North Sichuan Medical College, Nanchong, China
- Corresponding author.
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Araújo MG, Hürzeler MB, Dias DR, Matarazzo F. Minimal invasiveness in the alveolar ridge preservation, with or without concomitant implant placement. Periodontol 2000 2022; 91:65-88. [PMID: 35913046 DOI: 10.1111/prd.12441] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/04/2022] [Accepted: 05/15/2022] [Indexed: 11/28/2022]
Abstract
The aim of this systematic review was to evaluate the benefit of ridge preservation (RP) with minimally invasive (MI) approaches with or without concomitant implant placement on morbidity, esthetics, and patient-related outcomes. Three Internet sources were used to search for appropriate papers. The search strategy was designed to include any clinical study published on RP with MI approaches such as flapless surgery, socket shield and socket sealing techniques and, use of biological agents. Characteristics of the individual studies, regarding methodological aspects, quantitative and qualitative data were extracted. The potential risk of bias was estimated, and the acquired evidence was graded. Independent screening of 860 reports resulted in 26 included original articles. Nine publications evaluated MI approaches for RP without concomitant implant placement. Eleven studies evaluated interventions for RP with immediate implant placement (IIP). Six studies compared RP with IIP vs RP without IIP. This systematic review found that MI approaches in most of the studies failed to improve clinical variables regarding morbidity, esthetics, and patient-related outcomes. Based on the limited number of studies analyzed and the methodological discrepancies observed, it is not possible to confirm that MI approaches promote a significant benefit when applied to RP procedures.
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Affiliation(s)
- Maurício G Araújo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | - Markus B Hürzeler
- Private Practice Hürzeler/Zuhr, Munich, Germany.,Department of Operative Dentistry and Periodontology, Albert Ludwigs University, Freiburg, Germany
| | - Debora R Dias
- Department of Dentistry, State University of Maringá, Maringá, Brazil
| | - Flavia Matarazzo
- Department of Dentistry, State University of Maringá, Maringá, Brazil
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Balbinot GDS, Bahlis EADC, Visioli F, Leitune VCB, Soares RMD, Collares FM. Polybutylene-adipate-terephthalate and niobium-containing bioactive glasses composites: Development of barrier membranes with adjusted properties for guided bone regeneration. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 125:112115. [PMID: 33965098 DOI: 10.1016/j.msec.2021.112115] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/29/2021] [Accepted: 04/13/2021] [Indexed: 02/08/2023]
Abstract
This study aimed to develop bioactive guided bone regeneration (GBR) membranes by manufacturing PBAT/BAGNb composites as casting films. Composites were produced by melt-extrusion, and BAGNb was added at 10 wt%, 20 wt%, and 30 wt% concentration. Pure PBAT membranes were used as a control (0wt%BAGNb). FTIR and thermogravimetric analysis characterized the composites. Barrier membranes were produced by solvent casting, and their mechanical and surface properties were assessed by tensile strength test and contact angle analysis, respectively. The ion release and cell behavior were evaluated by pH, cell proliferation, and mineralization. Composites were successfully produced, and the chemical structure showed no interference of BAGNb in the PBAT structure. The addition of BAGNb increased the stiffness of the membranes and reduced the contact angle, increasing the roughness in one side of the membrane. Sustained pH increment was observed for BAGNb-containing membranes with increased proliferation and mineralization as the concentration of BAGNb increases. The incorporation of up to 30 wt% of BAGNb into PBAT barrier membranes was able to maintain adequate chemical-mechanical properties leading to the production of materials with tailored surface properties and bioactivity. Finally, this biomaterial class showed outstanding potential and may contribute to bone formation in GBR procedures.
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Affiliation(s)
- Gabriela de Souza Balbinot
- Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | | | - Fernanda Visioli
- Patology Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | | | | | - Fabricio Mezzomo Collares
- Dental Materials Laboratory, School of Dentistry, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
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