최후방 구치부 단일 임플란트의 치료결과에 대한 후향적 연구

Abstract

OBJECTIVE Aim of study is to evaluating the long-term outcomes of single implants in the most posterior area.

MATERIALS AND METHODS From January 2001 through December 2009, 169 patients were treated at the Department of periodontology, Chosun University Dental Hospital, Gwang-ju, Korea were identified. A retrospective study design was adopted. Patients gender and age, follow-up duration, distribution of the implants according to the location, inserted implants according to implant system, the inserted implants by diameter and length, cumulate survival rates for total implants, mean marginal bone loss were evaluated.

RESULTS 169 patients (117 male and 52 female) were eligible for the present study. 184 implants were inserted in the most posterior area. Among those implants, 51 implants of those were placed in maxilla, 133 implants of those were placed in mandible area. The diameter and length of the most implants appeared from 5 to 6 mm diameter and 11 to 12 mm length. 20 implants were installed after the sinus floor elevation, respectively. The average follow-up time was 4.86 years. During the follow-up, 4 implants in 4 patients were failed. A cumulative survival rate was 97.9%. The mean bone loss was 1.82 ± 0.64 mm.

CONCLUSION Reliable survival rate for the single implants in the most posterior area could be achieved after 3–10 years. Taken together, the single implant in the most posterior area of jaw is a successful treatment modality and has a positive prognosis as well.