Short-term clinical study on changes in bone mass around the implant following touch-controlled, minimally invasive implantation in the mandibular first molar region based on CBCT imaging

Abstract This study was aimed to investigate the change of peri-implant bone mass after touch-controlled, minimally invasive implantationin mandibular first molar region by CBCT. This retrospective study was conducted, involving 60 implants mandibular first molar implant repairation. Touch-controlled, minimally invasive implantation was performed, and healing abutments were installed post-surgery. CBCT scans were obtained at four time points: on the day of surgery (T0), 1 month post-surgery (T1), 3 months (T2), and 6 months (T3). Implant retention was calculated. Measuring horizontal and vertical bone absorption at each time point, both bucco-lingually and in the proximal and distal regions. The implant retention at T3 was 100%. Bone resorption was observed at the proximal and distal sites of the implant as early as T1, with more noticeable resorption at T2 and T3. Compared to T1, there was a significant increase in bone resorption, and the resorption amount tended to stabilize by T3. Horizontal bone resorption was not evident. In a word, Following touch-controlled, minimally invasive implantation of mandibular first molars, peri-implant vertical bone resorption was observed in the proximal, distal, and bucco-lingual regions, while horizontal bone resorption was not apparent. These findings provide valuable guidance for implant clinicians in selecting optimal surgical techniques.