Stomatologija最新文献

{"title":"Use of platelet-rich fibrin versus connective tissue graft in treatment of gingival recessions: Literature review.","authors":"Aušra Balčiūnaitė,&nbsp;Henrikas Rusilas,&nbsp;Juozas Žilinskas","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Aim: </strong>To compare and evaluate the effects of two different approaches on treating gingival recessions: coronally advanced flap (CAF) with platelet rich-fibrin (PRF) membrane and coronally advanced flap (CAF) with connective tissue graft (CTG).</p><p><strong>Material and methods: </strong>A systematic literature review was performed of randomized control trials in English identified in MEDLINE (PubMed), Cochrane Central Register of Controlled Trials (Cochrane Library), Springer Link, Science Direct and Google Scholar databases, published between 2015 and 2020. Studies had to be performed in vivo with follow-up periods of ≥6 months.</p><p><strong>Results: </strong>153 publications were found, out of which 8 were identified as relevant to the theme. Six of these studies evaluated periodontal parameters such as probing depth (PD), clinical attachment level (CAL), recession depth (RD), keratinized tissue width (KTW) and gingival thickness (GT). In 3 studies discomfort and aesthetic scores were analyzed as subjective parameters. 1 study histologically evaluated different techniques of gingival recession treatment.</p><p><strong>Conclusion: </strong>Both techniques are effective in the treatment of Miller's class I and II gingival recessions. Although the CTG technique may provide better results in KTW and GT, PRF avoids a donor site, which means a major decrease in postoperative discomfort.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 2","pages":"58-64"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38308110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stress and associated factors among dentists.","authors":"Guostė Antanavičienė,&nbsp;Monika Zaleckytė,&nbsp;Julija Narbutaitė","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Studies have shown that dentists are experiencing stress at work and it might have an impact on general health. Dental students have reported negative effect of stress starting in undergraduate studies period. The various predisposing factors have been identified and determined. The aim of our study was to determine and compare stress among dentists of different specializations.</p><p><strong>Materials and methods: </strong>A cross-sectional study was conducted in March-September 2016 among 317 dentists. 151 (48%) form public and 166 (52%) from private clinics. All participants were dental practitioners working in Kaunas, Lithuania. A modified version of Occupational stress questionnaire (Institute of Health, Helsinki, Finland, 1992) was used. Chi-square, Kolmogorov-Smirnov test Mann-Whitney U tests, Student's (t) criterion and logistic regression analysis model served for statistical analysis.</p><p><strong>Results: </strong>Majority of dentists were women (85%) and 61.8% of all participants were general practitioners. More general practitioners and paediatric dentists specialists were working in public clinics. The most stressful factors were: restrictions, work tension, and responsibility, while least stressful were value of work, work and life satisfaction (p<0.05). The intensive stress (>3) was indicated mostly by general practitioners, pediatric dentists and periodontologists.</p><p><strong>Conclusions: </strong>Stress is more experienced by dentists working in public clinic being as a general practitioner or having specialization of periodontologist or pediatric dentist. Dentists should be encouraged to take stress management course to cope with.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 2","pages":"44-48"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38308108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microcomputed tomography evaluation of the root canals morphology of the mandibular first molars.","authors":"Urtė Asijavičienė,&nbsp;Saulius Drukteinis,&nbsp;Aleksander Suduiko","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>The knowledge of the internal anatomy of the root canal system and its variations has a significant impact on the quality and outcome of endodontic treatment. The aim of this study was to evaluate the three-dimensional anatomical features of the root canals of mandibular first molars by using micro-computed tomography.</p><p><strong>Material and methods: </strong>Sixty mandibular first molars were scanned using a high-resolution micro-computed tomography device. The 2- and 3-3-dimensional anatomical features of each root such as distance between anatomical apex and apical foramen, the number of the lateral canals and configuration of the isthmuses, were evaluated.</p><p><strong>Results: </strong>The average distance between the anatomical apex and the apical foramen was 1.047 mm. Lateral canals were present in 85% of the cases, while 76% of them were localized in the apical third of the root. 80% of the mesial roots had isthmuses and the configuration of Type I, according to the Fan classification, was the most prevalent (35%).</p><p><strong>Conclusion: </strong>The results of this study revealed the wide variations of internal root canal anatomy in mandibular first molars, including lateral canals and isthmuses. A clinician should always consider the possible difficulties of anatomical variations before starting root canal treatment, to select the best and optimal treatment strategies.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 3","pages":"75-79"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25563967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Basal Cell Carcinoma. Analysis of 395 cases localized in the neck, ear and nose region.","authors":"Egils Kornevs,&nbsp;Ingus Arnolds Apse,&nbsp;Toms Janis Safronovs,&nbsp;Aija Krastina,&nbsp;Arturs Paparde,&nbsp;Gunars Lauskis,&nbsp;Girts Salms","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background and objectives: </strong>To test if there are different outcomes in basal cell carcinoma for lesion size, histopathology, localization, and recurrence rates.</p><p><strong>Materials and methods: </strong>A total of 395 patients with BCC localized in the neck, nose and ear regions who were surgically treated in Latvian Oncology Centre between 2006-2011 were analyzed retrospectively. The data were analyzed using modified classification based on Clarks et al. (2014) and McKenzie et al. (2016).</p><p><strong>Results: </strong>Three hundred and ninety-five cases of BCC that were surgically treated in head and neck region were reviewed. Results were tabulated in four categories: anatomical region, histopathology, lesion size, and recurrence rates. Classification by anatomical region: 228 cases in the nose region, 82 cases in the neck region, 82 cases in the ear region. Classification by histopathology: 259 cases presented as low risk BCC [nodular, pigmented, adenoid, keratotic and cystic], 21 cases presented as superficial, 94 cases presented as mixed, and 21 cases presented as high-risk BCC (metatypical, morphea form). Mann-Whitney U test was used to compare recurrent BCC cases to non-recurrent cases. Significantly higher recurrence rates were observed if BCC at the time of the excision was ≥10 mm (p<0.001). Significance was also noted in cases where histopathology was mixed BCC and in cases where mixed BCC was localized to the nose region (p<0.001).</p><p><strong>Conclusion: </strong>More attention should be brought to assessing classification and clinical treatment synergy. Higher recurrence rates are observed when lesions occur in high risk anatomical region (H zone), when lesion size reaches or exceeds 20 mm in diameter, and when lesion is subtyped as mixed BCC. It is crucial to evaluate risk factors such as BCC subtype and localization, as these are associated with a higher rate of recurrence when present in a single lesion. These risk factors, together with pre-treatment lesion evaluation will enable formulation of better treatment plan and prognostic aspects in each case.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 1","pages":"9-16"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38196016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clear cell odontogenic carcinoma: a rare pathology with an innovative resolution.","authors":"Natalia Lucía Gómez,&nbsp;Luis Boccalatte,&nbsp;Alejandro Yanzón,&nbsp;María Gabriela Nassif,&nbsp;Juan José Larrañaga,&nbsp;Marcelo Fernando Figari","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Clear cell odontogenic carcinoma (CCOC) is an uncommon condition that has been considered malignant since 2005. The clinical presentation usually involves an asymptomatic swelling, which typically affects the anterior mandible in middle-aged women; it has neither clinical nor radiological defining features. Immunohistochemical analysis usually aids diagnosis, as clear cells are also associated with other clear cell carcinomas and benign tumors. Radical surgery is the gold standard of treatment and usually needs microsurgical reconstruction with bone transference for restoration of facial anatomy and adequate function.  We present the case of a young woman with CCOC whose tumor removal and reconstructive surgery were planned virtually and assisted by intraoperative navigation. The novelty of the reconstructive procedure was the replacement of the fibula cutting guides for intraoperative navigation of the osteotomies. We present a brief review of CCOC and the benefits of using computer-assisted surgery (CAS) in high-complexity cases like this one.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 1","pages":"28-32"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38196019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Head and face injuries in elderly patients victims of fall. A single trauma center analysis.","authors":"Alidianne Fábia Cabral Cavalcanti,&nbsp;Sabrina da Silva Sousa Formiga,&nbsp;Taynná Dantas de Arruda,&nbsp;Rogéria Máximo de Lavôr,&nbsp;Christiane Leite Cavalcanti,&nbsp;Catarina Ribeiro Barros de Alenca,&nbsp;Sergio d'Avila,&nbsp;Alessandro Leite Cavalcanti","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this study was to identify the profile of elderly victims of falls and the occurrence of injuries and fractures in the head and face regions.</p><p><strong>Material and methods: </strong>Overall, 426 medical records of individuals aged 60 years or older of both genders hospitalized due to fall were analyzed. Data on gender, age group, period of occurrence, type of fall, presence of head and face injury and fracture of facial bones were collected. Data were organized with SPPS, version 20, and presented through descriptive and inferential statistics (Chi-square test). Poisson regression analysis was used (α<0.05).</p><p><strong>Results: </strong>The majority of victims were women (62.4%), aged 80 years or older (45.5%). Occurrences were more frequent in the daytime period (65.6%) and falls were mostly from the self-height (93.7%). Head and face lesions were found in 14.1% and 5.9% of victims, respectively. However, the presence of facial fracture was low (1.9%). Association between gender and occurrence of head (p=0.001) and face injury (p=0.017) was observed. The presence of \"head injury\" was associated with variables \"type of fall\" (p<0.001) and \"existence of bone fracture\" (p<0.001).</p><p><strong>Conclusion: </strong>Women aged 80 or over are the main victims of falls. Occurrences are common in the daytime period and due to falls from self height. Although soft tissue injuries in head and face were common, facial fractures showed low frequency.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 2","pages":"39-43"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38308107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tendencies of FGFR2 rs2981582 polymorphism in patients with oral cancer.","authors":"Vykintas Liutkevicius,&nbsp;Toma Tamauskaite,&nbsp;Alvita Vilkeviciute,&nbsp;Rasa Liutkeviciene,&nbsp;Rasa Smalinskaite,&nbsp;Agne Giedraitiene,&nbsp;Alina Smalinskiene,&nbsp;Virgilijus Uloza","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>Fibroblast growth factor receptor 2 (FGFR2) is a member of the FGFR family of tyrosine kinase receptors, which via cell growth, invasiveness, motility and angiogenesis contributes to the process of tumorogenesis. A huge interest today is focused on FGFR2 gene polymorphism as it may have a significant impact on the development of various benign and malignant tumors. A case-control study was designed to help determine if FGFR2 gene polymorphism rs2981582 is associated with oral cancer in Lithuanian subjects.</p><p><strong>Methods: </strong>The study included 35 patients with a diagnosis of oral cancer and 100 healthy subjects as a reference group. DNA samples were extracted from peripheral venous blood. Genotyping of FGFR2 rs2981582 was performed using the real-time polymerase chain reaction method. Statistical analysis was performed using \"IBM SPSS Statistics 20.0\".</p><p><strong>Results: </strong>It was determined that FGFR2 gene rs2981582 polymorphism has no effect on a development of oral cancer. The analysis of FGFR2 gene polymorphisms did not reveal any differences in the distribution of GG, GA, and AA genotypes between the oral cancer group, and the control group (42.9%, 48.6%, and 8.6% vs. 46%, 37% and 17%, respectively).</p><p><strong>Conclusion: </strong>Results of present study showed no association between FGFR2 gene polymorphisms rs2981582 and oral cancer. However, a further study with a larger sample sizes is advisable.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 1","pages":"3-8"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38188341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Musculomandibular morphology in individuals with different vertical skeletal growth patterns: an MRI and cone beam computed tomography study.","authors":"Katrina Gardovska,&nbsp;Ilga Urtane,&nbsp;Gaida Krumina","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to analyse the volumetric and crossectional parameters of masseter and medial pterygoid muscles in the relation with mandibular skeletal morphology in individuals with different underlying growth patterns in the vertical dimension.</p><p><strong>Material and methods: </strong>The study originally involved 76 individuals with definite clinical and radiological criteria: 31 skeletal Class III and 26 skeletal Class II patients before the orthognathic surgery and 20 skeletal class I (normal) individuals with complaints of wisdom teeth and associated medical problems. On the basis of cephalometric measurement of the mandibular plane and sella-nasion (MP-SN), the study sample was categorised according to the vertical facial dimension in 3 different growth pattern subgroups: 19 subjects with horizontal growth pattern, 25 subjects with vertical growth pattern and 33 subjects with neutral growth pattern. MRI was performed for the masseter and medial pterygoid muscles, and volume and cross-sectional area measurements were performed. Cone beam computed tomography (CBCT) investigation was performed for the assessment of craniofacial structures and the following measurements of the mandibular parameters were obtained: height of ramus, length of mandibular corpus, overall mandibular length, inter-angular width and intercondylar width.</p><p><strong>Results: </strong>There were statistically significant differences among all study groups regarding masseter volume (p<0.006) and CSA (p<0.006), with the highest values in the horizontal growth pattern group and the lowest values in vertical growth pattern group. After Bonferroni correction, statistically significant difference (p<0.004 and p<0.008) was noted between the horizontal and vertical growth pattern groups, respectively. A similar tendency was observed for the medial pterygoid, but with no statistical significance. A statistically significant negative correlation was observed between MP-SN and the volume of masseter and medial pterygoid in the overall sample. Of the seven muscular and mandibular variables included in the regression analysis, the final model included only four variables that were significantly associated with MP-SN and explained 37% of its variance (masseter volume (p=0.017), mandibular overall length (p<0.001), height of mandibular ramus (p=0.003), and length of mandibular corpus (p<0.001)).</p><p><strong>Conclusions: </strong>The masseter muscle seems to be more sensitive to the variation in mandibular morphology than the medial pterygoid muscle, and volume as the biomechanical characteristic seems to be a more significant parameter of the size of the interaction with vertical skeletal growth patterns.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 4","pages":"99-106"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25583827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stress in the bone and prosthetic components due to \"all-on-4\" system with polyether-ether-ketone screwing prosthesis. Analysis using 3D finite element method.","authors":"Ignas Vaitiekūnas,&nbsp;Justina Klimenko,&nbsp;Eglė Ivanauskienė,&nbsp;Juozas Žilinskas","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Objective: </strong>To identify and analyze distribution of bone stress in the implant area using a PEEK prosthesis fixed on four dental implants depending on different positions of the functional loading point on a cantilever in a 3D modeled system.</p><p><strong>Material and methods: </strong>The fragment of the lower jaw with dental implants and over-the-implant prosthetic part was represented by geometrical 3D models and diagonal loads were placed on the distal cantilever of the prosthesis. 3D models were exported to SolidWorks® Student Edition 2018 (Dassault Systemes SE, France) software. Average von Mises stress around the outer perimeter of the implant was measured in MPa. Relative stress was identified using a graded color scale in relative units. A 0.95 confidence level (P), 0.05 significance level (p), maximum error of 10% (Δ) were set. The data was analyzed using Statistical Package for Social Sciences® (IBM, Armonk, USA) version 137.</p><p><strong>Results: </strong>The distal implant on the same side as the point of loading receives 45.01-53.88% of all forces created. Stress at the frontal implants is distributed almost evenly. The pair of implants on the same side of the loading force suffers 66.38-74.68% of all forces. The implant on the opposite side of the loading force receives the smallest stress which is hardly influenced by the length of the console.</p><p><strong>Conclusion: </strong>A full arch restoration in an edentulous lower jaw using a four-implant fixed PEEK prosthesis system generates unevenly distributed internal stress in the bone next to the implants but does not go over the critical resistance of the bone.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 4","pages":"125-128"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25583831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study and evaluation of the gubernacular canal by means of cone beam computed tomography.","authors":"Thaís Silva Cerqueira,&nbsp;Kariza Vargens Diniz Correia","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The aims of this review of the literature were to conceptualize the gubernacular canal, by an approach to its function, importance and characteristics of its image in Cone Beam Computed Tomography. The bibliographic survey of scientific articles was conducted in the following databases: PubMed, Bireme, Scielo and Google Scholar. The gubernacular canal, which carries the gubernacular cord within it, is an anatomic structure that starts in the dental follicle and goes through to the alveolar bone crest behind the deciduous tooth. This set appears to play an important role in the tooth eruption process, serving as guide to the permanent tooth in the eruptive trajectory, in addition to being a possible factor in the etiology of odontogenic tumors. Therefore, knowledge about and visualization of this canal in terminological exams such as Cone Beam Computed Tomography are relevant in dental clinical practice to help with the diagnosis of tumors and abnormalities in the eruptive process, thus enabling early intervention when necessary.</p>","PeriodicalId":35508,"journal":{"name":"Stomatologija","volume":"22 3","pages":"86-91"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25563968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}