Introduction. Good implant stability is one of the most important factors for successful implant therapy. This precondition is important for all kinds of implants, oral and extra-oral, i.e. craniofacial implants as well. One of the most important factors for satisfactory implant stability is the bone quality, particularly of the cortical bone, which is determined by its microarchitectural parameters. The aim of this paper was to assess cortical bone microarchitectural parameters in the targeted regions for craniofacial implant placement. Methods. Bone quality on targeted locations was determined by the micro-CT method on a cadaver model. The target places for implant placement were the periorbital, the perinasal, and the periauricular region. Microarchitectural parameters included cortical thickness (Ct.Th.), cortical porosity (Ct.Po.), pore diameter (Po.Dm.), and pore separation (Po.Sp.). Results. The smallest Ct.Po. (4.1%) and the largest Po.Sp. (0.5 mm) were determined in glabella. The maximum Ct.Th. (2.7 mm) as well as Po.Dm. (0.2 mm) were found in the zygomatic region. The mastoid part of the temporal bone showed the smallest Ct.Th. (1.2 mm) and Po.Sp. (0.3 mm). The highest Ct.Po. was in the perinasal region (8.5%). Conclusion. The bone quality measured through microarchitectural parameters was good in all the regions of interest for the disk- and screw-shape extra-oral implant anchorage.

Introduction/Objective Quality of life before and after mono and bimaxillary surgery may vary from patient to patient depending on psychological assessment score. The aim of this study was to compare the quality of life before and six months after orthognathic surgery in correlation with a presurgical psychological assessment of patients with class III skeletal deformity. Assuming that patients with low psychological assessment results might have a lower quality of life after surgery despite successful treatment results. Methods For this prospective study 30 patients (19 female,11 male) were included. Psychological assessment was obtained before, and quality of life before and after surgery in skeletal deformity class III patients. Statistical analysis was done with a statistical package for social science - SPSS. Results Overall quality of life after surgery significantly improved in all patients. Surgical correction of class III deformities provided a significant improvement independent of the type of surgery and the severity of the deformity, as well as gender and age. There were significant differences in post-surgical quality of life scores between patients with good and poor psychological assessment scores, related to social disability (p < 0.05). Conclusion Patients with lower preoperative psychological scores experienced a lesser improvement in quality of life, particularly in the domain of social disability. This suggests that additional psychological treatment of these patients could further improve the beneficial effects of orthognathic surgery on postoperative quality of life.

Introduction Implantation in irradiated bone is very challenging due to many factors: implant therapy parameters, irradiated tissue, and the patient's general health. Implantologists have to consider all of these aspects when planning implant therapy and during the postsurgical recovery period. Case outline A case presented in this paper is a 54-year-old male, who was admitted to the Clinic for Maxillofacial Surgery, School of Dental Medicine in Belgrade, Serbia, for implant-anchored orbital prosthesis. One year previously, the patient had orbital exenteration and postoperatively received radiotherapy with an overall dose of 60 Gy. After planning, three disk implants - two double and one triple disk were placed (Ihde Dental, Switzerland). Implant stability was clinically satisfactory, with the immediate implant stability quotient score of 37, 46, and 51, respectively. After osseointegration implant retained prosthesis was manufactured. After six years due to osteoradionecrosis (ORN), implant stability was compromised. The patient received conservative and hyperbaric oxygen therapy. The implants regained stability, and the patient was in remission for four years. Afterwards, due to ORN, two implants were explanted, and the third implant was stable enough to anchor the prosthesis. The prosthetic plan had to be modified for one implant anchorage; afterwards, successful prosthetic rehabilitation was achieved. Conclusion Implantation in irradiated bone is very delicate, and careful planning of implant insertion and prosthetic rehabilitation is essential. A possible occurrence of osteoradionecrosis should also be taken into account, as a result of which the implant may be lost, which compromises the retention of the prosthesis.

Introduction/Objective. The COVID-19, pandemic had a great impact on all spheres of dental practice. Dentists are the most affected category, due to their line of work. Studies conducted worldwide have shown a range of repercussions in dentistry including lockdowns, limited access to dental services, changes in prices, working hours and availability of protective equipment, increased anxiety levels, changes in the protocols and personnel fear of contracting the disease at work. The aim of this prospective observational survey study was to evaluate the impact of the COVID-19 pandemic on the dental practices in Serbia, as well as the challenges and consequences faced by dentists since the beginning of the pandemic, via an anonymous questionnaire. Methods. Multi layered questioner was used divided in to 4 sections: 1. Demographic, 2. Dental office professional experience, 3. Epidemiological professional experience, 4. Personal pandemic experience. Results. In total, 459 members of the Serbian Dental Chamber participated, gender distribution was 34.4% men and 65.6% women, age range was 26 to 81 years, of which76.4% were immunized against COVID-19. Professional, epidemiological and personal experience showed high level of preventive measures, overcoming professional limitations in order to lower the probability of contracting and spreading the disease. Conclusion. The COVID-19 pandemic had a large influence on the dental practice in Serbia. Many dentists had to overcome the professional, economic and personal limits. The immunization made all the difference and created a safer environment for dentists and patients.

Introduction. It is generally known that dermal fillers are widely used in anti-aging medicine, to provide volume in healthy skin and mucous tissue. Fillers can also be successfully used with concave scars in order to lift the tissue and to give third dimension to the retracted skin surface. The aim of this case report was to show successful non-surgical treatment with hyaluron filler of the post traumatically deformed upper lip. Case outline. We report a case of a woman, with asymmetric partly incompetent upper lip, after trauma and primary surgical reconstruction. After almost 12 years, reconstruction with hyaluron filler was performed, using linear retrograde and bolus technique. Conclusion. Presented case correction of the posttraumatic scar of the upper lip illustrates that good aesthetic results could be achieved with hyaluron fillers.