CBCT Analysis of Edentulous Mandibular Symphysis in Iraqi Patients for Treatment with Implant-Supported Overdentures. Cross-Sectional Single-Center Study

Abstract

Background Overdentures supported by dental implants are a useful treatment strategy for patients with edentulous mandibles. The aim of this study was to evaluate certain characteristics of the mandibular symphyseal edentulous cases for dental implant treatment using CBCT; and if it is associated with gender differences. Methods Ninety patients (45 females and 45 males) were included in this investigation. A section along the midline of each CBCT image was chosen for the edentulous symphyseal area. Symphysis height, width, and cortical thickness was measured for each patient. Bone density were calculated at four points A two-sample Student’s t -test and Pearson correlation were used for statistical analysis. Results Males had a considerably greater symphysis height (26.66±6.21 mm) than females (24.07±5.00 mm) (p = 0.02). Similar results were found for bone width; males had greater means than females. In case of cortical bone thickness; males had thicker bone cortex in the buccal region than females (p = 0.01). While the difference in bone density between genders was small. However, a positive relationship was recorded between symphysis height and width. Conclusion Height and width of the mandibular symphysis were influenced by gender in edentulous patients, with men showing higher measurements. The reduction of symphyseal height decreased concurrently with the width after teeth were lost, while bone density was maintained in both genders with no difference between them. The lingual cortical bone is significantly thicker than the buccal cortex at the lower part of the symphysis.

Implant Survival in The Anterior Mandible: A Retrospective Cohort Study

“…40% had obesity, 12% had diabetes [DM], 35% had high blood pressure [HTN], 15% had cardiovascular diseases [CVD], 6% had osteoporosis, and 4% had arthritis. However, 17% of the cases were healthy and didn't have any medical conditions, as shown in table [1].…”

“…In this study, the researchers looked at nine different things: [1] whether the patient was male or female, [2] how old the patient was when they got a dental implant, [3] whether the patient had some or all of their teeth missing in their lower jaw, [4] where in the jaw the implant was placed [front or back], [5] whether the implant was put in right away or after a delay, [6] the size and type of implant used, [7] the quality of the bone in the jaw, [8] the type of false teeth used, and [9] whether one or more implants were put in. We collected information about the implants when they were put in or when the artificial teeth were installed.…”

“…The thick outer layer of bone and the way the ridges form after losing a tooth can greatly affect where dental implants are placed and how well they work. So, if a tooth is considered hopeless, the plan for placing an implant and attaching a replacement tooth should start before the tooth is taken out [1] .…”