Purpose: The study seeks to evaluate the gingival index (GI), probing depth (PD), plaque index (PI) for bar reinforced 3D printed provisional full arch and Milled PMMA (polymethyl methacrylate) provisional full arch prostheses. Materials and methods: This study involves immediate implant placement in completely edentulous mandibles using computer-guided surgery. Patients are selected based on CBCT evaluation, ensuring bone density between D1 and D3. A removable complete denture was first fabricated to restore the occlusal plane. A dual scan technique was used with radiopaque markers for digital planning. Virtual prosthesis planning was performed using Exocad software. A stackable surgical guide was fabricated to assist in accurate implant placement. Six implants were placed in the mandible using guided surgery. Multi-unit abutments were placed and secured on 2 groups: bar reinforced 3D printed provisional full arch and Milled PMMA (polymethyl methacrylate) provisional full arch prostheses. A prefabricated cobalt chromium (Cr-Co) barsupported provisional 3D printed prosthesis and milled PMMA ( polymethyl methacrylate ) are delivered immediately. The patient is followed up for healing and prosthesis adaptation. The evaluation parameters were gingival index, plaque index and probing depth. Results: Initially, no significant differences were found between groups, but by 3 and 6 months, the milled group showed higher plaque, gingival, and pocket depth values, while the reinforced printed group showed the lowest. All groups experienced a gradual increase in these parameters over time, indicating declining oral hygiene. For all groups, plaque, gingival scores, and pocket depth increased significantly over time (P
Imran et al. (Thu,) studied this question.