Journal of Craniomaxillofacial Research最新文献_第10页

Removable prosthetic treatment of an ectodermal dysplasia patient: A case report 可移动假体治疗外胚层发育不良患者一例报告

Journal of Craniomaxillofacial Research Pub Date : 2020-08-01 DOI: 10.18502/jcr.v7i1.4015

Faezeh Atri, S. Azizi, Sepehr Hatampour

引用次数: 1

Laser-assisted uncovering of dental implants 牙科植入物的激光辅助揭开

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/jcr.v6i4.3285

F. Razmara, Rezvaneh Ghazanfari, Ghazal Shabankare

{"title":"Laser-assisted uncovering of dental implants","authors":"F. Razmara, Rezvaneh Ghazanfari, Ghazal Shabankare","doi":"10.18502/jcr.v6i4.3285","DOIUrl":"https://doi.org/10.18502/jcr.v6i4.3285","url":null,"abstract":"Introduction: Laser assisted uncovering of dental implants is one of the most interesting aspects of lasers utilization. Compared to conventional scalpel technique, this method provides less bleeding and pain and shorter healing period, leading to a better patient compliance. The objective of this study is to contribute a comprehensive review on laser assisted second-stage of implant surgery. \u0000 Materials and Methods: We searched Pubmed and Google Scholar databases using combined keyword search or medical subject headings. Eight articles from 2009 to 2019 were identified and assessed. \u0000 Results: Selected studies were categorized according to variables including amount of pain, need for anesthesia, soft tissue healing, temperature rise and quality of impressions. All the reviewed articles, measuring the amount of required anesthesia, agreed that laser-aided uncovering of implants needs significantly less anesthesia compared to conventional scalpel technique. Laser-assisted uncovering of their implants led to less pain. Ex-vivo studies measuring temperature rise, suggested that application of a non-contact 445nm diode laser reduces the temperature rise significantly. However, Er:YAG lasers proved to generate lower temperature rise. Diode lasers showed no significant amelioration of soft tissue healing whilst Er:YAG and Er,Cr:YSGG lasers revealed superior esthetic results and shorter healing period. Impressions can be taken 4-7 days after the laser-assisted surgery with a satisfactory quality. Conclusion: Laser-assisted uncovering of implants can be selected as an alternative over the conventional scalpel technique. But, further studies are advisable","PeriodicalId":52622,"journal":{"name":"Journal of Craniomaxillofacial Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46422490","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}

引用次数: 1

Primary intraosseous squamous cell carcinoma of the mandible: report of two deceptive cases and literature review 原发性下颌骨骨内鳞状细胞癌:两例假病例报告及文献复习

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/jcr.v6i3.3267

N. Mahdavi, H. Bashizadeh, Samira Derakhshan, Younes Ghoreyshi

引用次数: 0

Effect of low-level laser therapy on orthodontic pain caused by canine retraction force 低强度激光治疗犬内收力所致正畸疼痛的疗效观察

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/JCR.V6I3.3254

Fatemeh Sadat Shayegh, Gholamreza Eslami, S. Rasuli, H. Gafari, Seyed Shojaedin Shayegh, Seyed Mohammad Reza Hakimaneh

{"title":"Effect of low-level laser therapy on orthodontic pain caused by canine retraction force","authors":"Fatemeh Sadat Shayegh, Gholamreza Eslami, S. Rasuli, H. Gafari, Seyed Shojaedin Shayegh, Seyed Mohammad Reza Hakimaneh","doi":"10.18502/JCR.V6I3.3254","DOIUrl":"https://doi.org/10.18502/JCR.V6I3.3254","url":null,"abstract":"Introduction: The purpose of this study was to determine the effect of low-level laser therapy on orthodontic pain after the first canine retraction force. \u0000Method: This single-blind split-mouth placebo-controlled randomized clinical trial was performed in 30 orthodontic patients requiring bilateral canine retraction in Shahed University. Once canine retraction was initiated, a single dose of diode laser radiation (660 nm, 80 MW, and 3.8 J/cm2 density, diameter of the optical fiber tip: 0/45cm2) was administered to a randomly selected maxillary or mandibular quarter for 30 s. The other quarter served as the placebo side and was treated using the same device without turning on the laser. On the first, second, fourth, and seventh days, the patients rated the pain they experienced on each side at home by using visual analog scale-based questionnaires. Changes in pain were analyzed using non-parametric analysiswith SPSS software. \u0000Results: In patients who experienced pain,a signiﬁcant pain reduction was notedon the first and fourth days after low-level laser therapy on the experimental side compared to that on the placebo side (P <0.05). \u0000Conclusions: A single dose of diodelaser therapy (660nm)can be an efﬁcient modality to reduce the orthodontic pain associated with canine retraction","PeriodicalId":52622,"journal":{"name":"Journal of Craniomaxillofacial Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43812523","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}

引用次数: 1

The Comparison of Three Different Fixation Methods on Bilateral Sagittal Split Ra-mus Osteotomy Mandibular on a 3D of Fully Modelled Mandible by the Finite Ele-ment Method 双侧矢状面劈裂下颌截骨三种不同固定方法在三维全模型下颌骨上的比较

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/JCR.V6I3.3258

S. Ghorashi, Mohammad Mehdi Keshavarzi, Shahrzad Damercheli, A. Parhiz

{"title":"The Comparison of Three Different Fixation Methods on Bilateral Sagittal Split Ra-mus Osteotomy Mandibular on a 3D of Fully Modelled Mandible by the Finite Ele-ment Method","authors":"S. Ghorashi, Mohammad Mehdi Keshavarzi, Shahrzad Damercheli, A. Parhiz","doi":"10.18502/JCR.V6I3.3258","DOIUrl":"https://doi.org/10.18502/JCR.V6I3.3258","url":null,"abstract":"In this paper, a full mandibular CT-scan in a specific patient is used to model BSSO surgery. The purpose is to compare the three most common fixation methods which are used in BSSO surgery by finite element method. Three different fixations are studied in order to obtain the minimum displacement of the lower jaw and optimum stress and strain on the specified fixation. The methods are two parallel plates with four screws, the operation of triangular screw configuration and one plate with four screws. The plates and the screw are modeled precisely by point clouds of Synthes Brand’s plate and screw. The mechanical properties of the full mandibular and, to obtain a practical model after the surgery, the mean jaw forces are extracted from literatures. It is resulted that the minimum displacement and stresses on the mandible and fixation tools happened in the Triangular screw configuration model and the two other methods have higher stress and lower displacement. Therefore, the mandibular in triangular method, experiences little deformation and the screws tolerates lower stress and strain which is better than the other two methods.","PeriodicalId":52622,"journal":{"name":"Journal of Craniomaxillofacial Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46706773","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}

引用次数: 1

Intraoral lipoma, surgical approach: A Case report 口腔内脂肪瘤，手术入路：一例报告

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/jcr.v6i4.3296

F. Razmara, N. Dehghani, Xaniar Mahmoudi, M. Reshadi, M. Mohammad

引用次数: 0

Evaluation of proximal bone loss around 2 commercial brands of SLA-surfaced implants and investigating possible effective factors 评估2个商业品牌的SLA表面植入物的近端骨丢失，并调查可能的有效因素

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/jcr.v6i4.3291

A. Karimi, Nahid Azizimoghaddam, Elahe Soltanmohamadi Borujeni

{"title":"Evaluation of proximal bone loss around 2 commercial brands of SLA-surfaced implants and investigating possible effective factors","authors":"A. Karimi, Nahid Azizimoghaddam, Elahe Soltanmohamadi Borujeni","doi":"10.18502/jcr.v6i4.3291","DOIUrl":"https://doi.org/10.18502/jcr.v6i4.3291","url":null,"abstract":"Introduction: The long term clinical success of dental implants depends on the stability of crestal bone level. Different dental implantation systems focus on micro-and macro-design to reduce late bone resorption. The purpose of this study was to evaluate bone loss at the proximal (mesial and distal) surfaces of SLA implants from 2 different companies. \u0000 Materials and Methods: This retrospective cross-sectional study was done on 48 patients receiving 161 SLA-surfaced (Straumann and Dentium) dental implants. The marginal bone loss was measured at mesial & distal sides of the implants on peri-apical X-ray images. The effective factors considered in this study were patients age, implant brand, time passed from fixture placement, preprosthetic surgery and type of prosthetic treatment that were obtained from patient records & interviews. \u0000 Results: Average mesial and distal bone loss was 1.50±1.359 and 1.517±1.3465 respectively. Pearson correlation coefficient indicates that 1) time passed from fixture placement, 2) commercial brand, 3) history of pre-prosthetic surgery and 4) age affected the amount of bone loss. \u0000 Conclusion: SLA-surfaced dental implants showed an acceptable amount of bone resorption and no statistically significant difference was observed between commercial brands.","PeriodicalId":52622,"journal":{"name":"Journal of Craniomaxillofacial Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43186140","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}

引用次数: 0

Two-point osteotomy technique in bilateral sagittal split osteotomy of mandible 两点截骨技术在双侧下颌骨矢状面劈裂截骨中的应用

Journal of Craniomaxillofacial Research Pub Date : 2020-06-20 DOI: 10.18502/JCR.V6I3.3265

A. Parhiz, H. Mojtahedi

引用次数: 0

Comparison of a novel adhesive system and plate and screw for facial fracture osteosynthesis 新型粘接系统与钢板螺钉在面部骨折接骨中的应用比较

Journal of Craniomaxillofacial Research Pub Date : 2019-08-24 DOI: 10.18502/JCR.V6I1.1626

R. Sharifi, M. Atai, M. Mohajeri, N. Bahrami

{"title":"Comparison of a novel adhesive system and plate and screw for facial fracture osteosynthesis","authors":"R. Sharifi, M. Atai, M. Mohajeri, N. Bahrami","doi":"10.18502/JCR.V6I1.1626","DOIUrl":"https://doi.org/10.18502/JCR.V6I1.1626","url":null,"abstract":"Background: in oral and maxillofacial fractures, plates and screws routinely fix fragments until the completion of healing process, which has its own complications in some critical fractures. To overcome this drawbacks bone adhesives are developed for the immobilization of fractured bones. \u0000Objective: In this in-vitro study we compared the bond strength obtained by immobilization of the bone fragments using plates and screw and new adhesive containing BTDMA monomer. \u0000Materials and methods: In this experimental in-vitro trial, bone fractures were simulated in bovine’s mandibular bone using an electrical saw. The bone fragments were randomly allocated in different groups and were immobilized with either plate and screws and adhesive containing 0,10, 15% BTDMA. After 24 hours tensile bond strength was calculated using universal testing machine. One-way ANOVA and Tukey post hoe test were used for statistical analysis. \u0000Results: Mean (± standard deviation) of tensile bond strength of bone fixation using adhesive containing 15% (W/W) BTDMA monomer were 176.0 (±18.89) N. These values were 149.1 (±23.88) N for adhesive containing 10% BTDMA; 102(±17.99) N for the base adhesive and 278.9 (±24.12) N for the screw and plate technique. \u0000Significant differences were found regarding bond strength of bone fixation in 4 groups using bone adhesives or plate technique (P<0.001). The highest bond strength was recorded for the plate group and the least was related to the base adhesive. Significant differences existed between all bone adhesives as declared by paired comparison (p<0.05). \u0000Conclusion: Despite the lower bond strength in adhesive groups in comparison with screw and plate, with regards to possible complications of screw and plate technique, it seems bone adhesives containing BTDMA monomer can be used for bone fragment fixation. However, bond strength is just one of the numerous properties that an adhesive should have and more studies must be done on these kinds of adhesives.","PeriodicalId":52622,"journal":{"name":"Journal of Craniomaxillofacial Research","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45171347","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}

引用次数: 1

Assessing VEGF mRNA and miR-494 expression in peripheral blood collected from patients suffering from oral squamous cell carcinoma 口腔鳞状细胞癌患者外周血VEGF mRNA和miR-494表达的评估

Journal of Craniomaxillofacial Research Pub Date : 2019-08-24 DOI: 10.18502/jcr.v6i1.1628

M. Khani, A. Mohamadnia, F. Hosseini, Parisa Bayat, N. Bahrami

引用次数: 0