Periosteal releasing incision with diode laser in guided bone regeneration procedure: a case series

Introduction: periosteal releasing incision [PRI] is nearly always essential to advance the flap sufficiently for a tension-free flap closure in bone augmentation procedures. However, hematoma, swelling, and pain are recognized as the main consequences of PRI with scalpel. The aim of this case series was to investigate the effectiveness of laser-assisted PRI in guided bone regeneration [GBR] procedure. In addition, postoperative hematoma, swelling, and pain and implant success were assessed

Methods: seventeen patients needed GBR were included in this study. Diode laser [940 nm, 2 W, pulse interval: 1 ms, pulse length: 1 ms, contact mode, 400-micro m fiber tip] was used in a contact mode to cut the periosteum to create a tension-free flap. Facial hematoma, swelling, pain, and the number of consumed nonsteroidal anti-inflammatory drugs [NSAIDs] were measured for the six postoperative days. Six months after implant loading, implant success was evaluated

Results: minimal bleeding was encountered during the procedure. A tension-free primary closure of the flap was achieved in all cases. The clinical healing of the surgical area was uneventful. None of the patients experienced hematoma, ecchymosis, or intense swelling after surgery. The mean value of maximum pain [visual analogue scale - VAS] was 20.59 +/- 12.10 mm [mild pain]. Patients did not need to use NSAID after four postoperative days. All implants were successful and functional and none of them failed after 6 months of implant loading

Conclusion: this study revealed the effectiveness of laser-assisted PRI in GBR procedure. This technique was accompanied with minimal sequelae at the first postoperative week. All implants were successful and no complication was noted during the course of this study

[ comparison of osteobiol gen_oss with normal healing extraction socket in quality and quantity of bone formation for implant placement in partial edentulous patients]

The increase in the number of complex implant cases has drawn the attention of researchers toward materials having bone regeneration promoting ability. Socket preservation and bone graft are recommended to minimize bone resorption. The aim of this study was to evaluate a kind of xenograft collagenic bone [osteo biol gen_oss] in socket regeneration. This randomized clinical trial was performed in 12 cases [6 in test and 6 in control groups] with two hopeless teeth. After tooth extraction, in test group, graft material was put in sockets but in the control group the socket was healed naturally. Three months later, during implant placement the specimens from both sites were sent to a pathologist for histologic and histomorphometric evaluations. Data were analyzed using Mc Nemar and Wilcoxan sigh rank test [alpha=0.05]. There were no significant differences between two groups in foreign body reaction, inflammation, bone vitality and percentage of bone gain. Average percentage of residual graft in test site was 6.73 +/- 1.43. Osteobiol gen_oss xenograft is an appropriate biocompatible osteoconductive material that promotes bone regeneration at 3 months following socket preservation in human extraction sockets