scholarly journals IMPLANT STABILITY AND MARGINAL BONE LOSS IN MANDIBULAR IMPLANT RETAINED OVERDENTURE CASES: A COMPARATIVE STUDY USING TWO STUD ATTACHMENT SYSTEMS

2016 ◽  
Vol 62 (1) ◽  
pp. 1065-1073 ◽  
Author(s):  
Yasser Araby ◽  
Emad Agamy
Keyword(s):  
Bone Loss ◽  
Comparative Study ◽  
Implant Stability ◽  
Marginal Bone Loss

scholarly journals The Influence of the Crown-Implant Ratio on the Crestal Bone Level and Implant Secondary Stability: 36-Month Clinical Study

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Jakub Hadzik ◽  
Maciej Krawiec ◽  
Konstanty Sławecki ◽  
Christiane Kunert-Keil ◽  
Marzena Dominiak ◽  
...  
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Clinical Performance ◽  
Implant Stability ◽  
Marginal Bone Loss ◽  
Sinus Augmentation ◽  
Clinical Trial Registration ◽  
Short Implants ◽  
Registration Number ◽  
Secondary Stability

Introduction. When the era of dental implantology began, the pioneers defined some gold standards used in dental prosthetics treatment for implant-supported restorations. Referring to traditional prosthetics, it was taken for granted that the length of an implant placed in the alveolar bone (the equivalent of the root) should exceed the length of the superstructure. Aim of the Study. The aim of the study was to determine whether implant length and the crown-to-implant (C/I) ratio influence implant stability and the loss of the surrounding marginal bone and whether short implants can be used instead of sinus augmentation procedures. Material and Methods. The patients participating in the study (n=30) had one single tooth implant, a short (OsseoSpeed™ L6 Ø4 mm, Implants) or a regular implant (OsseoSpeed L11 and L13 Ø4 mm, DENTSPLY Implants), placed in the maxilla. The evaluation was based on clinical and radiological examination. The crown-to-implant ratio was determined by dividing the length of the crown together with the abutment by the length of the implant placed crestally. Mean crown-to-implant ratios were calculated separately for each group and its correlation with the MBL (marginal bone loss) and stability was assessed. The authors compared the correlation between the C/I ratio values, MBL, and secondary implant stability. Results. Positive results in terms of primary and secondary stability were achieved with both (short and conventional) implants. The MBL was low for short and conventional implants being 0.34±0.24 mm and 0.22±0.46 mm, respectively. No significant correlation was found between the C/I ratio and secondary stability as well as the C/I ratio and the marginal bone loss. Conclusions. Short implants can be successfully used to support single crowns. The study has revealed no significant differences in the clinical performance of prosthetic restorations supported by short implants. Clinical trial registration number is NCT03471000.

scholarly journals Effects of platelet concentrates on implant stability and marginal bone loss: a systematic review and meta-analysis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Changxing Qu ◽  
Feng Luo ◽  
Guang Hong ◽  
Qianbing Wan
Keyword(s):  
Bone Loss ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Risk Of Bias ◽  
Mean Difference ◽  
Cochrane Library ◽  
Platelet Concentrates ◽  
Implant Stability ◽  
Marginal Bone Loss ◽  
Manual Search

Abstract Background Osseointegration is essential for the success and stability of implants. Platelet concentrates were reported to enhance osseointegration and improve implant stability. The purpose of this review is to systematically analyze the effects of platelet concentrates on implant stability and marginal bone loss. Methods Two researchers independently performed searches in the following databases (last searched on 21 July 2021): MEDLINE (PubMed), Cochrane Library, EMBASE, and Web of Science. In addition, a manual search was carried out on references of relevant reviews and initially included studies. All randomized controlled trials (RCTs) and controlled clinical trials (CCTs) on the application of platelet concentrates in the implant surgery procedure were included. The risk of bias of RCTs and CCTs were assessed with a revised Cochrane risk of bias tool for randomized trials (RoB 2.0) and the risk of bias in non-randomized studies—of interventions (ROBINS-I) tool, respectively. Meta-analyses on implant stability and marginal bone loss were conducted. Researchers used mean difference or standardized mean difference as the effect size and calculated the 95% confidence interval. In addition, subgroup analysis was performed based on the following factors: type of platelet concentrates, method of application, and study design. Results Fourteen studies with 284 participants and 588 implants were included in the final analysis. 11 studies reported implant stability and 5 studies reported marginal bone level or marginal bone loss. 3 studies had high risk of bias. The meta-analysis results showed that platelet concentrates can significantly increase implant stability at 1 week (6 studies, 302 implants, MD 4.26, 95% CI 2.03–6.49, P < 0.001) and 4 weeks (8 studies, 373 implants, MD 0.67, 95% CI 0.46–0.88, P < 0.001) after insertion, significantly reduced marginal bone loss at 3 months after insertion (4 studies, 95 implants, mesial: MD − 0.33, 95% CI − 0.46 to − 0.20, P < 0.001; distal: MD − 0.38, 95% CI − 0.54 to − 0.22, P < 0.001). However, the improvement of implant stability at 12 weeks after insertion was limited (P = 0.10). Subgroup analysis showed that PRP did not significantly improve implant stability at 1 week and 4 weeks after insertion (P = 0.38, P = 0.17). Platelet concentrates only placed in the implant sites did not significantly improve implant stability at 1 week after insertion (P = 0.20). Conclusions Platelet concentrates can significantly improve implant stability and reduce marginal bone loss in the short term. Large-scale studies with long follow‐up periods are required to explore their long-term effects and compare effects of different types. Trial registration This study was registered on PROSPERO, with the Registration Number being CRD42021270214.

scholarly journals Three-Year Retrospective Comparative Study between Implants with Same Body-Design but Different Crest Module Configurations

2020 ◽  
Vol 8 (4) ◽  
pp. 135
Author(s):  
Silvio Mario Meloni ◽  
Luca Melis ◽  
Erta Xhanari ◽  
Marco Tallarico ◽  
Giovanni Spano ◽  
...  
Keyword(s):  
Survival Rate ◽  
Bone Loss ◽  
Comparative Study ◽  
Retrospective Chart Review ◽  
Flat Connection ◽  
Marginal Bone Loss ◽  
Conical Connection ◽  
Body Design ◽  
The Difference ◽  
Retrospective Comparative Study

Crest module can be defined as the portion of a two-piece implant designed to retain the prosthetic components and to allows the maintenance of the peri-implant tissues in the transition zone. Aim: To evaluate the three-year after loading clinical and radiographic data, collected from patients that received a prosthetic rehabilitation on conical connection implants with partial machined collar (PMC; CC Group) and same body-designed implants, with flat-to-flat connection and groovy neck design (FC Group). Materials and Methods: A retrospective chart review of previously collected data, including documents, radiographs, and pictures of patients who received at least one implant-supported restoration on NobelReplace CC PMC or NobelReplace Tapered Groovy implants was performed. Patients with at least three years of follow-up after final loading were considered for this study. Outcomes measures were implant and prosthesis failures, any biological or technical complications, marginal bone loss. Results: Eight-two patients (44 women, 38 men; average age 55.6) with 152 implants were selected and divided in two groups with 77 (CC group) and 75 (FC group), respectively. Three years after final loading, one implant in CC group failed (98.7% survival rate), while no implants failed in FC group (100% survival rate). One restoration failed in CC group (98.7% survival rate) with no restoration failing in the FC one (100% survival rate). Differences were not statistically significant (p = 1.0). Three years after final loading, mean marginal bone loss was 0.22 ± 0.06 mm (95% CI 0.2–0.24) in CC group and 0.62 ± 0.30 mm (95% CI 0.52–0.72) in FC group. The difference was statistically significant (0.40 ± 0.13 mm; 95% CI 0.3–0.5; p = 0.003). Conclusion: with the limitation of this retrospective comparative study, implants with conical connection and partial machined collar seem to achieve a trend of superior outcomes if compared with implants with flat connection and groovy collar design.

scholarly journals Evaluation of marginal bone loss around dental implants in cigarette smokers and nonsmokers. A comparative study

2020 ◽  
Vol 9 (2) ◽  
pp. 729
Author(s):  
Dinesh ◽  
Jazib Nazeer ◽  
Rohit Singh ◽  
Prerna Suri ◽  
CD Mouneshkumar ◽  
...  
Keyword(s):  
Bone Loss ◽  
Comparative Study ◽  
Dental Implants ◽  
Marginal Bone Loss ◽  
Cigarette Smokers

scholarly journals COMPARISON BETWEEN STRONTIUM RANELATE AND METAL SUBSTITUTED HYDROXYAPATITE AS GRAFTING MATERIALS IN TREATMENT OF PERI-IMPLANT BONY DEFECTS WITH IMMEDIATE IMPLANTS (CLINICAL AND EXPERIMENTAL STUDY)

2021 ◽  
Vol 9 (5) ◽  
pp. 46-59
Author(s):  
Islam Kandil ◽  
◽  
Enas Elgendy ◽  
Mohamed Anees ◽  
Omar Khashaba ◽  
...  
Keyword(s):  
Bone Density ◽  
Bone Loss ◽  
Dental Implant ◽  
Strontium Ranelate ◽  
Sample Population ◽  
Implant Stability ◽  
Marginal Bone Loss ◽  
Significant Difference ◽  
Hydroxyl Apatite

Objective:The aim of this study is to compare between both of strontium ranelate and metallic substitute of hydroxyapatite as grafting materials in the treatment of peri-implant bony defects with immediate placement of dental implant in type I extraction sites within maxillary esthetic zone among clinical and experimental levels. This assessment was based on clinical, radiographic and histological studies. Subjects and Methods: The present study was carried on two types of population among both experimental levels on experimental white albinus rabbits and on clinical level among human patients for replacement of non-restorable maxillaryanterior and/or premolar teeth within esthetic zone by immediate implant. A written informed consent was obtained from all patients before their participation in this study.Patients were classified into two groups: the first one was with five patients with non-restorable maxillary anterior or premolar tooth that was treated by an immediately placed implant in conjunction with metallic substituted hydroxyapatite while the second one was treated by an immediately placed implant in conjunction with strontium ranelate as grafting material.The second sample population of study was carried out among ten male white (newzland) experimental rabbits with average body weight between 2.5 and 3 KG and within suitable environmental conditions in Medical Experimental Research Center (MERC) in faculty of medicine, Mansoura University. All rabbits sample was also divided equally and randomly in two groups with five rabbits within each one by the same criteria as mentioned where the first group was composed of five rabbits that received dental implant within intentionally made defect in tibia by trephine bur in conjunction with metallic substituted hydroxyl apatite as grafting material within gap between implant and defect and the second group was with the same criteria and procedures with strontium ranelategafting material within the defect. Pre-oparative photographs and cone beam computed topography (CBCT) were taken for study sample population. Within clinical patients, immediately paced dental implant have been placed in anterior esthetic zone with bone grafting around dental implant according to each group, Immediate CBCT and implant stability measurements has been taken after surgery followed by six months follow-up period to evaluate marginal bone loss, bone density, papillary esthetic score, implant stability and probing depth around dental implants. While within experimental animals trephine bur was used to intentionally create the bony defect that will simulate defect around immediate dental implant with grafting material around according to each group with six months follow-up to evaluate marginal bone loss, implant stability,bone density and for histological examination around implant within grafted area. All data were collected and statistically analyzed. Results:Generally among both clinical and experimental levels within both of clinical patients and experimental rabbits, metal substituted hydroxyl apatite (MSHAP) showed better results with significant difference than that presented in other group that has received Strontium ranelate (Sr) as a grafting material to fill the bony marginal gap around immediate dental implant during six months follow-up study period. Results presented high difference of significance between two groups in experimental and clinical levels in concern with both implant stability, marginal bone loss and even in bone quality and denisty when measured after six months follow-up. On the other hand there was no significant difference in concern with soft tissue response after six months in relation with peri-implant probing depth and MSHAP showed slight better results than that of Sr in records of papillary esthetic scores among clinical patients. Histological results showed better response of surrounding bony tissues towards MSHAP than that of Sr with more affinity of osteoblasts and osteocytes to the site of the grafted area. Conclusions:Metallic substituted hydroxyl-apatite (MSHAP) with its additive magnetic molecules within hydroxyapatite structure has better bony response from surrounding bony tissues than that provided by Strontium Ranelate (Sr) according to bone filling and preservation with less marginal loss, more affinity of new osteoblasts and mature osteocytes, long term implant stability after grafting and better bone density and quality at the grafted area around immediate dental implants in anterior maxillary area.

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