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Öğe Complex and compound odontomas : analysis of 69 cases and a rare case of erupted compound odontoma(Wolters Kluwer Medknow Publications, 2015) Bereket, Cihan; Çakır-Özkan, Nilüfer; Şener, İsmail; Bulut, Emel; Tek, MustafaObjective: The purpose of this study was to analyze clinic and radiologic features of the 69 odontoma cases and present a rare case of erupted compound odontoma in the oral cavity. Material and Methods: The 69 cases were analyzed with regard to the following parameters: age, gender, location, associated unerupted teeth, missing teeth, radiological and histopathological features and treatment protocols. Results: Of the 69 cases, 49 were compound odontoma and 20 were complex odontoma. There was a female predilection for both compound and complex odontomas. Compound odontoma occurred more often in the anterior region of the jaws; complex lesions occurred more often at the posterior mandible. The most common clinical manifestations were the retention of permanent teeth. Conclusion: Compound odontomas rarely erupt into the mouth. The presented case is the 13th case of erupted compound odontoma reported in the literature. The treatment of choice is surgical removal of the odontoma. In the case of odontomas associated to impacted teeth, the teeth should be preserved in wait of spontaneous eruption, or alternatively fenestration followed by orthodontic traction is indicated. Regular follow-up period is crucial to evaluate the prognosis of these teeth.Öğe THE EFFECT OF IMPLANT THERAPY ON MAXIMUM BITE FORCE IN EDENTULOUS ELDERLY PATIENTS: AN IN VIVO STUDY(Gunes Kitabevi Ltd Sti, 2015) Sener, Ismail; Aslan, M. Ali; Tek, Mustafa; Bereket, Cihan; Arici, Selim; Sato, ShuichiIntroduction: The purpose of the present study was to compare the bite force differences between conventional complete denture prostheses and implant retained overdentures. Materials and Method: The study group consisted of 15 complete denture patients. Three months after insertion of conventional dentures, the first bite force measurements were made with a Dental Prescale sheet (Fuji Film, Tokyo). After 5 and 7 weeks, two implants were placed in the mandibular symphysis region. Three months after implant surgery, implant retained overdentures were fabricated. Three months after the insertion of implant retained overdentures, a second set of bite force measurements was made and the values were recorded. Bite forces were compared between conventional complete dentures and implant retained overdentures and the chewing satisfaction obtained from patients in both groups was measured using visual analogue scale. All results were evaluated statistically using a paired t-test and values of p<0.05 were considered as statistically significant. Results: Bite forces and chewing satisfaction increased in all patients after the implant retained overdenture insertion. The mean bite force values before and after implant therapy were found 194.03 +/- 95.08 Newton and 302.91 +/- 119.84 Newton respectively. According to the paired t-test, a statistically significant difference were found in bite forces and chewing satisfaction before and after implant therapy (p<0.05). Conclusions: The present study showed increased bite forces and chewing satisfaction after insertion of implant retained overdentures.Öğe The effect of implant therapy on maximum bite force in edentulous elderly patients: An in vivo study(2015) Şener, İsmail; Aslan, M. Ali; Tek, Mustafa; Bereket, Cihan; Arıcı, SelimIntroduction: The purpose of the present study was to compare the bite force differencesbetween conventional complete denture prostheses and implant retained overdentures. Materials and Method: The study group consisted of 15 complete denture patients. Three months after insertion of conventional dentures, the first bite force measurements were madewith a Dental Prescale sheet (Fuji Film, Tokyo). After 5 and 7 weeks, two implants were placedin the mandibular symphysis region. Three months after implant surgery, implant retained overdentures were fabricated. Three months after the insertion of implant retained overdentures, asecond set of bite force measurements was made and the values were recorded. Bite forces were compared between conventional complete dentures and implant retained overdentures andthe chewing satisfaction obtained from patients in both groups was measured using visual analogue scale. All results were evaluated statistically using a paired t-test and values of p<0.05 were considered as statistically significant.Results: Bite forces and chewing satisfaction increased in all patients after the implant retained overdenture insertion. The mean bite force values before and after implant therapy were found 194.03 ± 95.08 Newton and 302.91 ± 119.84 Newton respectively. According to the paired ttest, a statistically significant difference were found in bite forces and chewing satisfaction before and after implant therapy (p<0.05). Conclusions: The present study showed increased bite forces and chewing satisfaction after insertion of implant retained overdentures.Öğe The effects of zoledronic acid on mandibular fracture healing in an osteoporotic model : a stereological study(Lippincott Williams & Wilkins, 2013) Şener, İsmail; Bereket, Cihan; Köşker, Hüseyin; Türer, Akif; Tek, MustafaThe aim of this study was to evaluate the effect of zoledronic acid (ZA) in the ovariectomized rat on mandibular fracture. Corpus osteotomies were performed on the mandible of ovariectomized rats. Miniplates were placed on these rats, which were randomly divided into 4 groups. After 7 days, groups 3 and 4 were injected with 0.1 mg/kg ZA. Groups 1 and 2 were control groups, so they were injected 0.1 mg/kg saline solution. Animals in groups 1 and 3 were killed at 4 weeks, whereas groups 2 and 4 were killed 8 weeks after operation. The new bone volume of the fracture gap was examined stereologically. Although the difference was not statistically significant compared with the other groups (groups 1 and 3), more bone formation was found in ZA-treated groups (groups 2 and 4) (P < 0.05).Öğe The predominant bacteria isolated from radicular cysts(Bmc, 2013) Tek, Mustafa; Metin, Murat; Şener, İsmail; Bereket, Cihan; Tokaç, MuratPurpose: To detect predominant bacteria associated with radicular cysts and discuss in light of the literature. Material and methods: Clinical materials were obtained from 35 radicular cysts by aspiration. Cultures were made from clinical materials by modern laboratory techniques, they underwent microbiologic analysis. Results: The following are microorganisms isolated from cultures: Streptococcus milleri Group (SMG) (23.8%) [Streptococcus constellatus (19.1%) and Streptococcus anginosus (4.7%)], Streptococcus sanguis (14.3%), Streptococcus mitis (4.7%), Streptococcus cremoris (4.7%), Peptostreptococcus pevotii (4.7%), Prevotella buccae (4.7%), Prevotella intermedia (4.7%), Actinomyces meyeri (4.7%), Actinomyces viscosus (4.7%), Propionibacterium propionicum (4.7%), Bacteroides capillosus (4.7%), Staphylococcus hominis (4.7%), Rothia denticariosa (4.7%), Gemella haemolysans (4.7%), and Fusobacterium nucleatum (4.7%). Conclusions: Results of this study demonstrated that radicular cysts show a great variety of anaerobic and facultative anaerobic bacterial flora. It was observed that all isolated microorganisms were the types commonly found in oral flora. Although no specific microorganism was found, Streptococcus spp. bacteria (47.5%) - especially SMG (23.8%) - were predominantly found in the microorganisms isolated. Furthermore, radicular cysts might be polymicrobial originated. Although radicular cyst is an inflammatory cyst, some radicular cyst fluids might be sterile.Öğe Propolis accelerates the consolidation phase in distraction osteogenesis(Lippincott Williams & Wilkins, 2014) Bereket, Cihan; Özan, Fatih; Şener, İsmail; Tek, Mustafa; Altunkaynak, Berrin ZuhalWe evaluated the effect of propolis on new bone formation after distraction osteogenesis (DO). This study examined 3 groups: control group, P100, and P200. Rabbits underwent DO of the left mandible after an osteotomy between the first molar and the mental foramen. Bone mineral content and bone mineral density were evaluated using dual-energy x-ray absorption 1 and 4 weeks after the procedure. The volume of connective tissue and new bone and the number of capillaries were measured using stereologic analysis after the subjects were killed. Dual-energy x-ray absorption showed that the bone mineral content and bone mineral density were higher in the groups treated with propolis by week 4, and these parameters were higher in the P200 group. Stereologic analysis showed no significant differences in connective tissue volume and number of capillaries among the groups. New bone volume was lowest in the P200 group. We concluded that propolis accelerates bone formation and may shorten the consolidation phase with DO.
