The immediate implant-supported mandibular overdentures with cusped and cuspless tooth

INTERVENTION: The randomization of selected patients was by lottery selection after giving each patient a number in a list, and then randomly the 20 patients were divided into two groups, 10 patients for each group. Group 1: Rehabilitation with immediate implants (the implant inserted immediately after extraction) loaded with overdentures with cusped teeth. Group 2: Rehabilitated with immediate implants (implants inserted immediately after extraction) loaded with overdentures with cuspless teeth. Following flap elevation and the removal of a tooth and implant installation, inside the socket then the clinical measurements were made to characterize the dimension of the surrounding bone walls, as well as the marginal defect. There were no membranes or filler material was used. The flaps were subsequently replaced and secured with sutures in such a way that the healing cap of the implant was exposed to the oral environment. After 3 months of healing a re‐entry procedure was performed and the clinical measurements were repeated. CONDITION: This study aimed to examine the impact of immediate implant‐supported mandibular overdentures with cusped or cuspless tooth on surrounding bone tissues. ; Oral Health PRIMARY OUTCOME: Crestal bone loss observed over one year, at 3, 6, 9 and 12 months. The measurement of crestal bone loss by periapical radiographs was evaluated by the masial and distal marginal bone height around the abutments (implant) from the radiograph of each patient as follow; two points were marked one at apex of implant and anther at the tip of the implant, a line (A) was drown connecting the 2 points then the tangent (b) to the tip of tooth, marginal bone height was measured by a dial caliper from mesial and distal alveolar crest to line (b), and measurements on serial radiographs were compared and the results were statistically analyzed as mean and percent. SECONDARY OUTCOME: 1. Periapical lesions measured in each cross‐section from the widest and deepest part of the lesion by the researcher using a precision digital caliper with an accuracy of up to 0.01 mm, at 3, 6, 9 and 12 months.; 2. Pain measured using visual analog scale (VAS) at 3, 6, 9 and 12 months; 3. Neural sensibility measured using a pulp sensibility test, which includes an electric test, which extrapolates pulp health from sensory response, at 3, 6, 9 and 12 months; 4. Mobility of implants measured according to the periotest, siemens dental bensheim, Germany at 3, 6, 9 and 12 months. INCLUSION CRITERIA: 1. Aged over 40 years 2. Free from any systematic diseases 3. Non‐smoker 4. Jaw relation angle class one 5. Refused removable partial dentures 6. Edentulous more than 3 years 7. Hopeless mandibular teeth