EVALUATION OF STABILITY AND CRESTAL BONE CHANGES AROUND IMPLANTS PLACED AT CRESTAL VERSUS SUBCRESTAL LEVEL IN CONTROLLED TYPE TWO DIABETIC PATIENTS

Abstract

INTRODUCTION :Peri-implant bone level preservationis the key to maintainingperi-implant soft tissue and stability.Many studies have discussed the role of placing dental implants at various depths on crestal bone loss, but they were debatable. OBJECTIVES: To compare clinically and radiographically the effect of placing implants atcrestal versus subcrestal levels on the crestal bone lossand stability evaluation in controlled type 2diabetic patients. MATERIALS AND METHODS: 22 controlleddiabetic patients were randomized accordingto placement depth (group I: 11 implants were placed equicrestally) (group Ⅱ : 11implants were placed 1mm subcrestally). Stability of implants, clinical and radiographical assessment were done for both groups. RESULTS: 19 implants were included in our study (10 crestal and 9 subcrestal). There were no statistically significant differences in bleeding index and probing depth between the 2 groups while plaque index was greateramong subcrestal group. Crestal bone loss mesiodistally was significantly higherin crestal group, whilethere was no significant difference buccolingually between crestal and subcrestal groups. Stabilityvalues weresignificantly greater in subcrestal group at loading time. CONCLUSION: Sub-crestal implant placement is preferable for controlled type 2 diabetic patients as it decreases the probability of implant thread exposureprovided that careful oral hygiene care is followed and regular periodic checks to maintain peri-implantsoft tissue and dental bone health.