[Correlation analysis of pre-operative glucose control targets and tooth extraction prognosis in elderly diabetic...

Objective: To evaluate the prognosis of tooth extraction in elderly mellitus patients with fasting plasma glucose (FPG)>8.88 mmol/L and ≤10.00 mmol/L. Methods: This study was a prospective cohort study. One hundred elderly mellitus patients, 53 males and 47 females, aged 65-95 years old (75.8±8.0), were recruited for tooth extraction at the ECG monitoring out-patient clinic in the Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology from Oct 2018 to Oct 2019. Fifty cases were selected into the observation group with FPG>8.88 mmol/L and ≤10.00 mmol/L before tooth extraction, while the rest 50 cases were in the control group with FPG≤8.88 mmol/L. The levels of glycosylated hemoglobin (HbA1c) of patients were required to be≤8.5% before tooth extraction in both groups. Post-operative pain, swelling, pus discharge, fistula at local sockets and systemic fever were observed 24 h and 1 week after the extraction. The healing of tissues around the extraction socket was observed 1 month after operation. The correlation between blood glucose control target and the effects of socket healing before and after tooth extraction was analyzed statistically using SPSS 25.0 software. Results: The pre-operative FPG levels of observation group and control group were (6.92±0.99) and (9.88± 0.68) mmol/L, and HbAlc levels were (6.76±0.83)% and (7.69±0.75)%, respectively. There were no significant differences in age, gender, diabetes history, extraction position, gingival index and tooth looseness between the two groups (P>0.05). Ninety-four percent (47/50 in each group) of patients in the two groups healed well within 24 h after the extraction. There were 6 patients, 3 in each of the two groups, complained tolerable post-operative pain in tooth extraction sockets. However, no redness, swelling and pus in the surrounding tissues were observed. There was no statistical difference of socket healing after the extractions between two groups (P>0.05). Conclusions: The pre-operative levels of FPG≤10.00 mmol/L and HbA1c≤8.5% are reasonable creteria for evaluating tooth extraction risk for the elderly diabetic patients.