Frequency of Lower Lip Paresthesia in Patients Receiving Implant-Supported Mandibular Dentures in Tabriz, Iran in 2017-2018

Background: Widespread use of dental implants in the past 15 years has resulted in an increase in complications associated with implant surgeries. The aim of the present study was to determine the frequency of lower lip paresthesia in patients receiving implant-supported mandibular overdentures. Methods: In this descriptive, cross-sectional study, 63 patients receiving implant-supported mandibular overdentures were evaluated. For clinical examination, the two-point discrimination test (2DP) was used before surgery and at 1-, 3- and 6-month postoperative intervals. Data was analyzed using descriptive statistical tests and chi-square test. Results: The results showed frequency rates of 19%, 4.8% and 4.8% for lower lip paresthesia at 1-, 3- and 6-month postoperative intervals. At 1-month postoperative interval, female patients exhibited a significantly higher rate of paresthesia compared to male patients (P = 0.035). Conclusions: Lower lip paresthesia was highly prevalent (19%) one-month after implant surgery; however, its frequency decreased over time. After 3 months, the frequency of paresthesia decreased by about 3 quarters (4.8%) and remained constant until 6 months after surgery. During the 1-month period after surgery, female patients had a high rate of paresthesia compared to male patients.