Journal of Istanbul University Faculty of Dentistry最新文献_第6页

Fabrication of a screw-retained hybrid prosthesis following treatment of peri-implant defects: a case report. 种植体周围缺损治疗后螺钉保留混合假体的制作:1例报告。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.57173

Bebek Serra Oguz Ahmet, Gulsum Sayin Ozel, Hilal Uslu Toygar

引用次数: 2

Mandibular incisor extraction: a 5-year follow-up. 下颌切牙拔除:5年随访。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.65274

Kadir Beycan, Ahu Acar

引用次数: 0

Clinical evaluation of the stability of implants placed at different supracrestal levels. 植体放置于不同截骨水平稳定性的临床评价。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.96003

B Alper Gultekin, Ali Sirali, Pinar Gultekin, Selim Ersanli

{"title":"Clinical evaluation of the stability of implants placed at different supracrestal levels.","authors":"B Alper Gultekin, Ali Sirali, Pinar Gultekin, Selim Ersanli","doi":"10.17096/jiufd.96003","DOIUrl":"https://doi.org/10.17096/jiufd.96003","url":null,"abstract":"Purpose: The aim of this study was to evaluate the stability during healing and before loading of implants placed at two different supracrestal levels according to their collar texture.Materials and methods: This retrospective study included patients who received posterior implants with the same macro design. Implants with a machined collar were placed 0.3 mm above the crestal bone (M group), while those with a laser-microtextured collar were placed 1 mm above the crestal bone (L group). All implants healed in a single stage with healing abutments. Implant stability quotient (ISQ) values were determined using resonance frequency analysis immediately after implant placement during surgery and after 1, 4, 8, and 12 weeks after surgery. Other evaluated factors for stability included the implant diameter and length and the site of placement (maxilla or mandible).Results: In total, 103 implants (47 L, 56 M) were evaluated. The median ISQ values at baseline and 1 week after placement were significantly higher for the M group than for the L group (p=0.006 and p=0.031, respectively). There were no differences at the subsequent observation points. The ISQ value was higher for wide-diameter than regular diameter (p=0.001) and mandibular implants than maxillary implants (p=0.001 at 0-8. weeks; p=0.012 at 12 weeks) at all observation points. When diameter data were neglected, the implant length did not influence the ISQ value at all observation points.Conclusion: Our results suggest that submerging implant more inside bone may only influence primary stability. Moreover, the implant diameter and site of placement influence primary and secondary stability before loading, whereas the implant length does not when its diameter is not accounted for.","PeriodicalId":30947,"journal":{"name":"Journal of Istanbul University Faculty of Dentistry","volume":"50 3","pages":"21-31"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/40/fb/jiufd-050-021.PMC5573511.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35552061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Evaluation of keratocystic odontogenic tumors using cone beam computed tomography. 锥形束计算机断层扫描对牙源性角化囊性肿瘤的评价。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.58691

Mustafa Gumusok, Meryem Toraman Alkurt, Farid Museyibov, Ozlem Ucok

{"title":"Evaluation of keratocystic odontogenic tumors using cone beam computed tomography.","authors":"Mustafa Gumusok, Meryem Toraman Alkurt, Farid Museyibov, Ozlem Ucok","doi":"10.17096/jiufd.58691","DOIUrl":"https://doi.org/10.17096/jiufd.58691","url":null,"abstract":"Purpose: The aim of this retrospective study is to determine the radiological features of keratocystic odontogenic tumors (KCOT) using cone-beam computed tomography (CBCT).Materials and methods: CBCT images of 28 patients who had histopathologically-confirmed KCOT were retrospectively reviewed from the archives of the Department of Dentomaxillofacial Radiology, Gazi University Faculty of Dentistry. The location and size of KCOT, cortical expansion, cortical perforation, relation with the impacted teeth, and the impact on the mandibular canal were evaluated.Results: The mean age of patients at initial diagnosis was 34.5 years. Patients with an impacted tooth were significantly younger than those without an impacted tooth (p<0.05). Among KCOTs, 21% were localized in the maxilla whereas 79% were found in the mandible. The lesions localized in the mandible were mostly found in the retromolar-ramus region. Of these patients, 93% had cortical expansion and 75% had bone perforation. Of the 22 mandibular lesions, 20 were in close proximity of the mandibular canal and 18 (90%) of these lesions had caused destruction in the mandibular canal.Conclusion: KCOTs exhibit their aggressive nature in the jaw bone. CBCT is a useful radiological imaging method to examine the radiologic characteristics of KCOTs such as bone destruction and their spatial relations with the neighboring anatomic structures.","PeriodicalId":30947,"journal":{"name":"Journal of Istanbul University Faculty of Dentistry","volume":"50 3","pages":"32-37"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17096/jiufd.58691","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35552062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

The effect of different surface treatment techniques on the surface roughness of feldspathic porcelain. 不同表面处理工艺对长石瓷表面粗糙度的影响。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.30632

Fidan Alakus Sabuncuoglu, Ergul Erturk

{"title":"The effect of different surface treatment techniques on the surface roughness of feldspathic porcelain.","authors":"Fidan Alakus Sabuncuoglu, Ergul Erturk","doi":"10.17096/jiufd.30632","DOIUrl":"https://doi.org/10.17096/jiufd.30632","url":null,"abstract":"Purpose: This in vitro study compared the effect of five different techniques on the surface roughness of feldspathic porcelain.Materials and methods: 100 feldspathic porcelain disk samples mounted in acrylic resin blocks were divided into five groups (n=20) according to type of surface treatment: I, hydrofluoric acid (HFA); II, Deglazed surface porcelain treated with Neodymium:yttrium- aluminum-garnet (Nd:YAG) laser; III, Deglazed porcelain surface treated with Erbium:yttrium-aluminum-garnet (Er:YAG) laser; IV, Glazed porcelain surface treated with Neodymium:yttrium-aluminum-garnet (Nd:YAG) laser, V; Glazed porcelain surface treated with Erbium:yttrium-aluminum-garnet (Er:YAG) laser. The surface roughness of porcelain was measured with a noncontact optical profilometer. For each porcelain sample, two readings were taken across the sample, before porcelain surface treatment (T1) and after porcelain surface treatment (T2). The roughness parameter analyzed was the average roughness (Ra). Statistical analysis was performed using Kolmogorov-Smirnov and Wilcoxon signed rank test.Results: Mean Ra values for each group were as follows: I, 12.64±073; II, 11.91±0.74; III, 11.76±0.59; IV, 3.82±0.65; V, 2.77±0.57. For all porcelain groups, the lowest Ra values were observed in Group V. The highest Ra values were observed for Group I, with a significant difference with the other groups. Kolmogorov-Smirnov showed significant differences among groups (p<0.001).Conclusion: Surface treatment of porcelain with HFA resulted in significantly higher Ra than laser groups. Both Er:YAG laser or Nd:YAG laser on the deglaze porcelain surface can be recommended as viable treatment alternatives to acid etching.","PeriodicalId":30947,"journal":{"name":"Journal of Istanbul University Faculty of Dentistry","volume":"50 3","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17096/jiufd.30632","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35453698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Effects of thermocycling and various drinks on the color stability of heat-polymerized acrylic resin. 热循环及各种饮料对热聚合丙烯酸树脂颜色稳定性的影响。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.28587

Pinar Altinci, Pinar Durkaya

{"title":"Effects of thermocycling and various drinks on the color stability of heat-polymerized acrylic resin.","authors":"Pinar Altinci, Pinar Durkaya","doi":"10.17096/jiufd.28587","DOIUrl":"https://doi.org/10.17096/jiufd.28587","url":null,"abstract":"Purpose: The discoloration of acrylic resin denture bases may lead to significant esthetic problems. The aim of this in vitro study was to investigate the effects of frequently consumed drinks on the color changes of fresh and aged, heat-polymerized, conventional acrylic resin.Materials and methods: Eighty-four, heat-polymerized acrylic resin specimens (4 mm x 5 mm x 30 mm) were fabricated. Half of the specimens were aged by thermal cycling (between 5°C and 55°C, 60-second dwell time, 3000 cycles). The specimens were stored at 37°C in different drinks as non-aged and aged subgroups including water (control group), black tea, green tea, sour cherry juice, coke and coffee (n=7). The discoloration of each specimen after 1 and 7 days storage in the drinks were measured by a colorimeter based on CIE Lab system. The data of colour differences (ΔE) were analyzed by ANOVA and Dunnet's tests.Results: Thermal cycling and storage in water induced a slight color change. The highest ΔE values were observed in the aged groups, which was also noticeable for black tea and sour cherry juice after 7 days of storage (ΔE>1.5) (p<0.05). The ΔE values of all test groups were detected within the acceptable clinical limits (ΔE<3.5).Conclusion: These results suggest that the color stability of denture base acrylic resins is influenced by ageing. Black tea, sour cherry juice and coke can cause significant discolorations on acrylic resin denture bases.","PeriodicalId":30947,"journal":{"name":"Journal of Istanbul University Faculty of Dentistry","volume":"50 3","pages":"15-20"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/85/9c/jiufd-050-015.PMC5573510.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35453700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Infratemporal fossa infection with inferior alveolar nerve involvement. 颞下窝感染伴下牙槽神经受累。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.34851

Yusuf Emes, Serhat Yalcin, Buket Aybar, Itir Sebnem Bilici

引用次数: 5

Comparison of cone-beam computed tomography and panoramic radiographs in detecting maxillary sinus septa. 锥束ct与全景x线检查上颌窦间隔的比较。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-10-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.84476

Meryem Toraman Alkurt, Ilkay Peker, Serife Degerli, Ali Rıza İlker Cebeci, Elif Sadik

{"title":"Comparison of cone-beam computed tomography and panoramic radiographs in detecting maxillary sinus septa.","authors":"Meryem Toraman Alkurt, Ilkay Peker, Serife Degerli, Ali Rıza İlker Cebeci, Elif Sadik","doi":"10.17096/jiufd.84476","DOIUrl":"https://doi.org/10.17096/jiufd.84476","url":null,"abstract":"Purpose: The purpose of this retrospective study was to compare the performance of cone-beam computed tomography (CBCT) and panoramic radiography in detecting the presence and location of maxillary sinus septa.Materials and methods: This study included radiographic examination of 104 maxillary sinuses of 52 individuals (26 females, 50% and 26 males, 50%) whose panoramic radiographs and CBCT images were obtained for several dental causes which were examined by the consensus of four dentomaxillofacial radiologists. The posterior maxillary segments in proximity of maxillary sinus were classified as edentulous and dentate maxillary segments. The location of maxillary sinus septa was classified as primary septa and secondary septa according to the presence of maxillary tooth at the affected site. The maxillary sinus septa were divided into three categories (anterior, middle and posterior) according to its relation with posterior maxillary teeth. Data were statistically analyzed with chi-square and Fisher's exact tests.Results: The septa were found in 23.1% and 29.8% of the maxillary sinuses on panoramic radiography and CBCT images, respectively. The majority of maxillary sinus septa were observed in dentate posterior maxillary segments on both panoramic (45.8%) radiography and CBCT (64.5%) images. Statistically significant differences (p<0.001) were found between panoramic radiography and CBCT images for presence, location and neighborhood with the posterior maxillary teeth of maxillary sinus septa.Conclusion: The results of this study demonstrated the low reliability of panoramic radiography images in the detection of maxillary sinus septa. CBCT images can provide valuable information to the clinicians about the presence and location of maxillary sinus septa.","PeriodicalId":30947,"journal":{"name":"Journal of Istanbul University Faculty of Dentistry","volume":"50 3","pages":"8-14"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17096/jiufd.84476","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35453699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 18

Monostotic fibrous dysplasia presenting in maxilla: a case report. 上颌单一纤维结构发育不良1例。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-04-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.99328

Taha Emre Kose, Onur Dincer Kose, Mehmet Ali Erdem, Abdulkadir Burak Cankaya, Ilknur Ozcan Duman

引用次数: 2

The effect of mouth rinses on the color stability of sonicfill and a nanohybrid composite. 漱口水对超声填料和纳米复合材料颜色稳定性的影响。

Journal of Istanbul University Faculty of Dentistry Pub Date : 2016-04-01 eCollection Date: 2016-01-01 DOI: 10.17096/jiufd.15743

Tugba Toz Akalin, Gencay Genc, Yonca Korkmaz Ceyhan, Funda Ozturk Bozkurt

{"title":"The effect of mouth rinses on the color stability of sonicfill and a nanohybrid composite.","authors":"Tugba Toz Akalin, Gencay Genc, Yonca Korkmaz Ceyhan, Funda Ozturk Bozkurt","doi":"10.17096/jiufd.15743","DOIUrl":"https://doi.org/10.17096/jiufd.15743","url":null,"abstract":"Purpose: The aim of this study was to evaluate the effects of 4 mouth rinses on the color stability of two different resin composites.Materials and methods: A2 shade sonic-activated bulk fill material SonicFill (Kerr) and conventional nanohybrid composite Filtek Z550 (3M ESPE) were used. Forty disc-shaped specimens (10 mm x 2 mm) were fabricated for both composites and finished using 400-grit SiC paper and polished. After polishing and immersing in distilled water for 24h all specimens were subjected to color measurements. The baseline color values (L*, a*, b*) of each specimen were measured with a colorimeter. Following baseline measurement each composite group was divided into 5 groups: Oral-B Pro Expert Clinic Line Alcoholfree (Oral-B) group, Listerine Tooth Defense Rinse (Listerine) group, Pharmol Zn Mouth rinse (Çözümilaç) group, Nilera Mouth rinse (Nilera) group and Distilled water (control) group. The specimens were incubated in mouth rinses (20 ml) at 37°C for 12 hours and subjected to color measurement. Two-way ANO VA was used for statistical analysis (p<0.05).Results: SonicFill showed significantly higher discoloration when exposed to Oral-B Pro Expert Clinic Line Alcohol-free, Listerine Tooth Defense Rinse and Pharmol Zn Mouth rinse. The color differences of two resin composites were not statistically significant for distilled water and Nilera Mouth rinse.Conclusion: Within the limits of this study it can be concluded that the SonicFill showed higher discoloration than nanohybrid resin composite Filtek Z550.","PeriodicalId":30947,"journal":{"name":"Journal of Istanbul University Faculty of Dentistry","volume":"50 2","pages":"17-23"},"PeriodicalIF":0.0,"publicationDate":"2016-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17096/jiufd.15743","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35452325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13