Primary stability of implants with peri-implant bone defects of various widths: an in vitro investigation
10.5051/jpis.2019.49.1.39
- Author:
Hyun jin YIM
1
;
Hyun Chang LIM
;
Ji Youn HONG
;
Seung Il SHIN
;
Jong Hyuk CHUNG
;
Yeek HERR
;
Seung Yun SHIN
Author Information
1. Department of Periodontology, Periodontal-Implant Clinical Research Institute, Kyung Hee University School of Dentistry, Seoul, Korea. ssyislet@khu.ac.kr
- Publication Type:Original Article
- Keywords:
Alveolar bone loss;
Anatomic models;
Bone transplantation;
Dental implants
- MeSH:
Alveolar Bone Loss;
Bone Transplantation;
Dental Implants;
In Vitro Techniques;
Models, Anatomic;
Osteotomy;
Ribs
- From:Journal of Periodontal & Implant Science
2019;49(1):39-46
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: This study aimed to evaluate the effects of i) the extent of peri-implant bone defects and ii) the application of bone cement on implant stability with respect to the measurement direction. METHODS: In 10 bovine rib bones, 4 implant osteotomies with peri-implant bone defects of various widths were prepared: i) no defect (D0), ii) a 2-mm-wide defect (D2), iii) a 4-mm-wide defect (D4), and iv) a 8-mm-wide defect (D8). The height of all defects was 10 mm. Implant stability quotient (ISQ) values and Periotest values (PTVs) were measured after implant placement and bone cement application. RESULTS: With increasing defect width, decreased ISQs and increased PTVs were observed. Statistically significant differences were found between groups D0 and D8, D0 and D4, and D2 and D8. Prior to bone cement application, inconsistent PTVs were found in group D8 depending on the measurement direction. Bone cement increased the implant stability. CONCLUSION: Peri-implant bone deficits measuring around 50% of the implant surface compromised implant stability. Clinically, PTVs should be cautiously interpreted in implants with large peri-implant defects due to inconsistent recordings with respect to the measurement direction.
