Comparison of autogenous tooth bone graft and synthetic bone graft materials used for bone resorption around implants after crestal approach sinus lifting: a retrospective study
김영균, 이준호, 윤지영, 윤필영, 엄인웅,
소속 상세정보
김영균 ( Kim Young-Kyun ) - Seoul National University Bundang Hospital Section of Dentistry Department of Oral and Maxillofacial Surgery
이준호 ( Lee Jun-Ho ) - Seoul National University School of Dentistry Department of Periodontology
윤지영 ( Yun Ji-Young ) - Seoul National University Bundang Hospital Section of Dentistry Department of Oral and Maxillofacial Surgery
윤필영 ( Yun Pil-Young ) - Seoul National University Bundang Hospital Section of Dentistry Department of Oral and Maxillofacial Surgery
엄인웅 ( Um In-Woong ) - Korea Tooth Bank
KMID : 0363020140440050216
Abstract
Purpose: This retrospective study compares the amount of bone resorption around implants between an autogenous tooth bone graft (AutoBT) and a synthetic bone graft after a bone-added crestally approached sinus lift with simultaneous implant placements.
Methods: In all, 37 patients participated in this study. Seventeen patients were grouped as group I and underwent an AutoBT-added sinus lift using the crestal approach. The remaining 20 patients were grouped as group II and underwent synthetic bone grafting. Both groups received the implant placements simultaneously. Of the 37 participating patients, only 22 patients were included in the final results: Eleven patients of group I and 11 patients of group II. Before the surgery, the distance from the alveolar crest to the sinus floor was measured using panoramic radiography. After the surgery, the distance was measured again from the neck of the implant thread to the most superior border of the added graft materials. Then, the amount of sinus lift was calculated by comparing the two panoramic radiographs. After a year, a panoramic radiograph was taken to calculate the resorption of the bone graft material from the radiograph that was taken after the surgery. The significance of the resorption amount between the two types of graft materials was statistically analyzed.
Results: The bone height was increased to an average of 4.89 mm in group I and 6.22 mm in group II. The analysis of panoramic radiographs 1 year after the surgery showed an average bone resorption of 0.76 mm and 0.53 mm, respectively. However, the degree of lifting (P=0.460) and the amount of bone-grafted material resorption (P=0.570) showed no statistically significant difference.
Conclusions: Based on this limited study, AutoBT can be considered a good alternative bone graft to a synthetic bone graft in a bone-added sinus lift, when extraction is necessary prior to the surgery.
키워드
Bone substitutes ; Demineralized dentin matrix ; Dental implants ; Osseointegration ; Sinus floor augmentation
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