No abstract

INTRODUCTION: Maxillofacial injuries, such as soft-tissue injuries, dental injuries, or maxillary, mandibular, and zygomatic fractures; are the most common injuries treated by oral and maxillofacial surgeons. In the last few years polyetheretherketone (PEEK) material was recognized as a material for maxillo-facial and cranial reconstructions. OBJECTIVES: The aim of this study is to evaluate the use of custom made polyetheretherketone (PEEK) plate in the treatment of mandibular fracture. MATERIALS AND METHODS: 10 patients having non-comminuted recent mandibular fracture will be treated using custom made PEEK plates. Clinical follow up will be conducted after 24-hours, one week, 1 month, 3 months and 6 months. Also, a radiographic investigation will be performed after 6 months to estimate the mean bone density across the fracture line. RESULTS: Data will be collected, summarized and statistically analyzed using the suitable methods. CONCLUSIONS: Fixation of mandibular fracture with custom made PEEK plate provides satisfying clinical and radiographic results after 6 months follow up.

INTRODUCTION:Rehabilitation of the anterior maxilla using dental implants is frequently problematic because of the deficiency of alveolar ridge width. Under certain conditions ridge augmentation with simultaneous implant placement is recommended. OBJECTIVES: To evaluate horizontal augmentation of narrow anterior maxillary alveolar ridge with simultaneous implant placement using Cerabone® with and without platelet rich plasma (PRP). MATERIALS AND METHODS: In this study, 14 implants were placed in patients with insufficient alveolar ridge width in the maxillary lateral incisor region. Patients were divided into two groups; In Group "1" Cerabone® only was used as an augmentation material while in Group "2" a mixture of Cerabone® and PRP was used. A collagen membrane was used to cover the grafting material. Postoperative pain was assessed using visual analogue scale. Healing and postoperative edema were evaluated. Cone Beam Computed Tomography (CBCT) was obtained before surgery, immediately postoperatively and after 6 months so that the labial bone width and bone density were evaluated. Osstell was used to evaluate implant stability quotient (ISQ) during surgery and after 6 months. RESULTS: All implants in both groups were successfully osseointegrated and functionally stable. No significant difference in postoperative pain, edema or wound healing was detected between the two groups. The mean percentage of change in ISQ was superior in Group "2" when compared to Group "1", but statistically there was no significant difference (P=0.898). The labial bone width in Group "2" was significantly higher than that of Group "1" (P=0.002). The mean percentage of change in labial bone density was 57.95% in Group "1" and 112.52% in Group "2" (P=0.848). CONCLUSION: Cerabone® can be used effectively for guided bone regeneration around dental implant in narrow maxillary anterior alveolar ridges. Moreover, the addition of PRP has a positive effect on bone regeneration around implants.

INTRODUCTION:Maxillofacial trauma is in querulous expansion by clinical and biomechanical studies in order to enhance the wellestablished techniques and to utilize new materials, all are directed towards the reduction in the immobilization period and enhancement of the rigid fixation. Since 1984 the cannulated Herbert Bone Screw (HBS) proves to be a successful mean of fracture fixation in various fields of orthopaedic surgery, nonetheless with no sufficient evidence about its performance in the maxillofacial trauma field. OBJECTIVES:The aim of the study was to evaluate clinically and radiographically the performance of HBS in the treatment of mandibular fractures. MATERIALS AND METHODS: Eleven patients with non-comminuted recent mandibular fracture were treated using Herbert bone screw. Clinical follow up was conducted after 24-hours, one week, four weeks, six weeks and twelve weeks. Also, a radiographic investigation was performed immediately postoperative and after twelve weeks to estimate the mean bone density across the fracture line. RESULTS: By the end of the follow up period, all cases showed normal lower lip sensation, normal occlusal and intercuspal relation, a statistically significant (P value < 0.001) decrease in level of pain intensity score based on the Visual Analogue Scale (VAS) and an uneventful wound healing with no records of developed infection. Mean bone density after twelve weeks showed a statistically significant (p<0.001) increase in its values when compared to the immediately postoperative values. CONCLUSIONS: This study deduced that the use of Herbert screws results in a predictable and satisfactory outcome, in terms of achieving uneventful wound healing and high postoperative mean bone density values.

INTRODUCTION: Preparation of the implant osteotomy has been classically performed using drills of various shapes to conform the site to the implant's geometry. Drilling procedures may cause not only mechanical trauma to the bone but also heat-induced bone necrosis, thus representing a significant risk for failed osseointegration. As an alternative single drilling osteotomy is a technique that allows effective bone cutting with minimally traumatic procedures and less heat generation. OBJECTIVES: Evaluation of single drilling implant site preparation in affecting implant stability and crestal bone loss that takes place around the implant. MATERIALS AND METHODS: The study was conducted on thirteen patients having missing posterior mandibular teeth indicated for implant restoration. All implants were placed using single drilling osteotomy. After 3 months, final crowns were delivered. All implants were followed for 6 months. Clinically, each patient was evaluated for pain, swelling and stability of the implant. Radiographically, cone beam computed tomography (CBCT) was used for the assessment of marginal bone level and bone density. RESULTS: There was a significant increase in bone density from immediate postoperative to the end of the 6 months. The mean of marginal bone level from immediately post-operative to the 3rd month was significant and from immediate to 6th month was significant. One case displayed swelling in the first week and the implant was removed (failure case) due to lack of oral hygiene maintenance by the patient. CONCLUSIONS: Single drilling osteotomy was a successful treatment procedure, with satisfactory clinical outcomes, and a low incidence of complications.