An in Vivo Assessment of Effects of Various Flap Designs on Overall Implant Performances Estimated at Different Timings: An (Clinical) Original Research Study

Abstract

Aim: This study aims to assess the effects of various periodontal flap designs on overall Flap related implant performance estimated at different timings.

Materials and Methods: The study involved 80 patients with a missing mandibular right first molar who preferred dental implants. Out of these, 60 patients aged 35 to 60 met the inclusion criteria and underwent a Cone Beam Computed Tomography (CBCT) scan for surgical planning. Exclusion criteria included mental health issues, smoking, pregnancy, and certain systemic diseases. The dental implant was placed after a precise incision, and the mucoperiosteal flap was sutured. Healing abutments were added two months later, with final prostheses fitted three months post-surgery. The patients were divided into three groups based on surgical techniques: Group 1 used the envelope periodontal flap for minimal disruption, Group 2 the triangular flap for better access, and Group 3 the trapezoidal flap for broader access while preserving tissue. Evaluations at 6 and 12 months used CBCT to assess implant performance, with statistical analyses conducted to compare outcomes based on the flap designs.

Statistical Analysis and Results: This study involved 60 patients aged 35 to 60, with 29 males and 31 females. Participants were divided into three groups based on surgical techniques for implant placement: Group 1: 20 patients underwent the envelope flap technique. At six months, healing improved for 6 patients, confirmed by the Pearson Chi-Square test. Twelve-month results showed enhanced bone remodelling. Group 2:20 patients used the triangular periodontal flap technique. Six months later, 7 patients experienced improved aesthetics, and at twelve months, healing was better for 6 patients, with 8 reporting aesthetic improvements. Group 3: The last group of 20 patients received implants via the trapezoidal periodontal flap technique. Six months in, 5 patients showed healing and aesthetic improvements, while twelve months later, 7 patients benefited from enhanced accessibility and visibility. A summary in Table 8 using one-way ANOVA indicates significant outcome variations based on the flap techniques employed.

Conclusion: This study concluded that all periodontal flap designs improved implant success, with the triangular flap notably enhancing aesthetics and minimising gingival recession in certain cases. The choice between triangular and trapezoidal periodontal flaps should depend on specific circumstances, as each has unique pros and cons related to surgical access, implant stability, and healing. The findings highlight the need for further research to refine these techniques and enhance patient outcomes.