laurent BADIH - Academia.edu (original) (raw)

Papers by laurent BADIH

Journal of Prosthetic Dentistry, Apr 1, 2018

According to the World Health Organization, caries and periodontal diseases are the main causes o... more According to the World Health Organization, caries and periodontal diseases are the main causes of tooth loss. 1 Worldwide, between 15% and 20% of the population between 35 and 44 years of age have lost at least 1 tooth, and 30% of elderly people between 65 and 74 years of age have no natural teeth. 1 Implant dentistry improves the lives of edentulous patients thanks to recent progress in the areas of implant protocols, implant performance, and dental prostheses, as well as product ergonomics. 2 However, implant dentistry is not always suited to many of the situations that arise, notably when insufficient bone quality exists to ensure the implant's good performance over the long term. 3,4 The implant design phase, therefore, is critical for dealing with increasingly complex situations. 3,4 The prognosis for an implant's mechanical strength is strongly influenced by load conditions during mastication 5

Journal of Prosthetic Dentistry, Mar 1, 2019

PURPOSE. This retrospective study evaluated the outcome of implant-retained overdentures (IODs) a... more PURPOSE. This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. MATERIALS AND METHODS. A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=prefabricated round bars, n=7; group B=one-piece anterior milled bars, n=20; and group C=two bilaterally placed milled bars, n=9) in the mandible (n=24) and/or in the maxilla (n=12). The analysis focused on the survival and success rates (according to Kaplan-Meier) of the implants and prostheses. Technical complication rates for each type of restoration were analyzed and compared via one-way ANOVA and the Chi-squared test. The prevalence of peri-implantitis (radiographic bone loss ≥3.5 mm) was evaluated by digital analysis of panoramic radiographs taken postoperative (baseline) and after 5-19 years of clinical function (follow-up). RESULTS. The mean observational time was 7.3 years. The survival rates of the prostheses and implants were 100% and 97.7%, respectively. Technical complications occurred more frequently in group A (mean: 3.5 during observational time) than in the other two groups (B: 0.8; C: 1.0). However, this difference was not statistically significant (P=0.58). Peri-implantitis was diagnosed for 12.4% of the implants in 37% of the patients. CONCLUSION. Bar-retained IODs are an adequate treatment option for edentulous jaws. These restorations may exhibit high implant/prosthesis survival rates (>97%), and a limited incidence of technical complications after a mean observational period of >7 years. Nevertheless, peri-implantitis was identified as a frequent and serious biological complication for this type of reconstruction.

Frontiers in Bioengineering and Biotechnology, Mar 22, 2023

Journal of Dental Research, Dental Clinics, Dental Prospects

Background. Photobiomodulation (PBM) may be prescribed after dental surgery to accelerate tissue ... more Background. Photobiomodulation (PBM) may be prescribed after dental surgery to accelerate tissue healing and improve implant stability. The objective of this study is to evaluate the efficiency of LED-PBM on the dental implant osseointegration. Methods. A total of 48 implants (KontactTM) were inserted in 8 Yucatan minipigs (6 implants per minipig) divided into 2 groups (test and control). The test group received LED-PBM with a total energy of 124.2 J/cm2 delivered over 4 sessions (at day0, day+8, day+15 and day+28) lasting 12 minutes each. At day+28, all animals were sacrificed, and their mandibles removed to perform histologic and histomorphometric analysis. Implant osseointegration was evaluated using the computation of bone/implant contact (BIC) index and bone surface/total surface (BS/ TS) ratio. The groups were compared using Student’s unpaired t test. Results. BIC index and BS/TS ratio were significantly higher within the test group as compared to the control group (P<0.01)...

Frontiers in Bioengineering and Biotechnology

The trend towards patient-specific medical orthopedic prostheses has led to an increased use of 3... more The trend towards patient-specific medical orthopedic prostheses has led to an increased use of 3D-printed surgical implants made of Ti6Al4V. However, uncertainties arise due to varying printing parameters, particularly with regards to the fatigue limit. This necessitates time-consuming and costly experimental validation before they can be safely used on patients. To address this issue, this study aimed to employ a stress-life fatigue analysis approach coupled with a finite element (FE) simulation to estimate numerically the fatigue limit and location of failure for 3D-printed surgical osteosynthesis plates and to validate the results experimentally. However, predicting the fatigue life of 3D components is not a new concept and has previously been implemented in the medical device field, though without experimental validation. Then, an experimental fatigue test was conducted using a proposed modification to the staircase method introduced in ISO 12107. Additionally, a FE model was d...

The Journal of Prosthetic Dentistry

This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19... more This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=prefabricated round bars, n=7; group B=one-piece anterior milled bars, n=20; and group C=two bilaterally placed milled bars, n=9) in the mandible (n=24) and/or in the maxilla (n=12). The analysis focused on the survival and success rates (according to Kaplan-Meier) of the implants and prostheses. Technical complication rates for each type of restoration were analyzed and compared via one-way ANOVA and the Chi-squared test. The prevalence of peri-implantitis (radiographic bone loss ≥3.5 mm) was evaluated by digital analysis of panoramic radiographs taken post-operative (baseline) and after 5-19 years of clinical function (follow-up). The mean observational time was 7.3 years. The survival rates of the prostheses and implan...

The Journal of Prosthetic Dentistry

Journal of Prosthetic Dentistry, Apr 1, 2018

According to the World Health Organization, caries and periodontal diseases are the main causes o... more According to the World Health Organization, caries and periodontal diseases are the main causes of tooth loss. 1 Worldwide, between 15% and 20% of the population between 35 and 44 years of age have lost at least 1 tooth, and 30% of elderly people between 65 and 74 years of age have no natural teeth. 1 Implant dentistry improves the lives of edentulous patients thanks to recent progress in the areas of implant protocols, implant performance, and dental prostheses, as well as product ergonomics. 2 However, implant dentistry is not always suited to many of the situations that arise, notably when insufficient bone quality exists to ensure the implant's good performance over the long term. 3,4 The implant design phase, therefore, is critical for dealing with increasingly complex situations. 3,4 The prognosis for an implant's mechanical strength is strongly influenced by load conditions during mastication 5

Journal of Prosthetic Dentistry, Mar 1, 2019

PURPOSE. This retrospective study evaluated the outcome of implant-retained overdentures (IODs) a... more PURPOSE. This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. MATERIALS AND METHODS. A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=prefabricated round bars, n=7; group B=one-piece anterior milled bars, n=20; and group C=two bilaterally placed milled bars, n=9) in the mandible (n=24) and/or in the maxilla (n=12). The analysis focused on the survival and success rates (according to Kaplan-Meier) of the implants and prostheses. Technical complication rates for each type of restoration were analyzed and compared via one-way ANOVA and the Chi-squared test. The prevalence of peri-implantitis (radiographic bone loss ≥3.5 mm) was evaluated by digital analysis of panoramic radiographs taken postoperative (baseline) and after 5-19 years of clinical function (follow-up). RESULTS. The mean observational time was 7.3 years. The survival rates of the prostheses and implants were 100% and 97.7%, respectively. Technical complications occurred more frequently in group A (mean: 3.5 during observational time) than in the other two groups (B: 0.8; C: 1.0). However, this difference was not statistically significant (P=0.58). Peri-implantitis was diagnosed for 12.4% of the implants in 37% of the patients. CONCLUSION. Bar-retained IODs are an adequate treatment option for edentulous jaws. These restorations may exhibit high implant/prosthesis survival rates (>97%), and a limited incidence of technical complications after a mean observational period of >7 years. Nevertheless, peri-implantitis was identified as a frequent and serious biological complication for this type of reconstruction.

Frontiers in Bioengineering and Biotechnology, Mar 22, 2023

Journal of Dental Research, Dental Clinics, Dental Prospects

Background. Photobiomodulation (PBM) may be prescribed after dental surgery to accelerate tissue ... more Background. Photobiomodulation (PBM) may be prescribed after dental surgery to accelerate tissue healing and improve implant stability. The objective of this study is to evaluate the efficiency of LED-PBM on the dental implant osseointegration. Methods. A total of 48 implants (KontactTM) were inserted in 8 Yucatan minipigs (6 implants per minipig) divided into 2 groups (test and control). The test group received LED-PBM with a total energy of 124.2 J/cm2 delivered over 4 sessions (at day0, day+8, day+15 and day+28) lasting 12 minutes each. At day+28, all animals were sacrificed, and their mandibles removed to perform histologic and histomorphometric analysis. Implant osseointegration was evaluated using the computation of bone/implant contact (BIC) index and bone surface/total surface (BS/ TS) ratio. The groups were compared using Student’s unpaired t test. Results. BIC index and BS/TS ratio were significantly higher within the test group as compared to the control group (P<0.01)...

Frontiers in Bioengineering and Biotechnology

The trend towards patient-specific medical orthopedic prostheses has led to an increased use of 3... more The trend towards patient-specific medical orthopedic prostheses has led to an increased use of 3D-printed surgical implants made of Ti6Al4V. However, uncertainties arise due to varying printing parameters, particularly with regards to the fatigue limit. This necessitates time-consuming and costly experimental validation before they can be safely used on patients. To address this issue, this study aimed to employ a stress-life fatigue analysis approach coupled with a finite element (FE) simulation to estimate numerically the fatigue limit and location of failure for 3D-printed surgical osteosynthesis plates and to validate the results experimentally. However, predicting the fatigue life of 3D components is not a new concept and has previously been implemented in the medical device field, though without experimental validation. Then, an experimental fatigue test was conducted using a proposed modification to the staircase method introduced in ISO 12107. Additionally, a FE model was d...

The Journal of Prosthetic Dentistry

This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19... more This retrospective study evaluated the outcome of implant-retained overdentures (IODs) after 5-19 years of clinical function. A retrospective analysis of patient files was performed referring to 27 patients who received 36 IODs with 3 different bar designs (group A=prefabricated round bars, n=7; group B=one-piece anterior milled bars, n=20; and group C=two bilaterally placed milled bars, n=9) in the mandible (n=24) and/or in the maxilla (n=12). The analysis focused on the survival and success rates (according to Kaplan-Meier) of the implants and prostheses. Technical complication rates for each type of restoration were analyzed and compared via one-way ANOVA and the Chi-squared test. The prevalence of peri-implantitis (radiographic bone loss ≥3.5 mm) was evaluated by digital analysis of panoramic radiographs taken post-operative (baseline) and after 5-19 years of clinical function (follow-up). The mean observational time was 7.3 years. The survival rates of the prostheses and implan...

The Journal of Prosthetic Dentistry