Abstract Objectives: The purpose of the present study was to evaluate long‐term effect microthread on maintenance marginal bone level. Material and methods: Seventeen patients were selected two types Astra Tech implants installed, with Microthread™ coronal portion fixture [Astra Single Tooth Implant (ST)] or without TiOblast (TB)]. ST TB installed adjacent each other within same partially edentulous sites loss evaluated by radiographic image. bone‐level alteration after prosthesis insertion...

Background: The purpose of the present study was to investigate short‐term effects microthread location on peri‐implant marginal bone levels. Methods: Two types implants, one with microthreads placed at implant top (group A) and other 0.5 mm below B), were adjacent each in partially edentulous areas 20 patients. In total, 40 implants placed. Bone loss around analyzed after 1 year functional loading, gingival parameters (modified plaque index modified sulcus bleeding index) soft tissue...

Abstract Objective: To quantify the changes in nose after bimaxillary surgery to correct skeletal Class III malocclusion and test hypothesis that there is no change nasal width following surgical correction of when a cinch properly used. Materials Methods: Sixty-five adult Korean patients who had received maxillary advancement/impaction mandibular set-back conjunction with an alar base suture were evaluated. The anthropometric variables region measured directly on soft-tissue surface before...

Abstract Objectives To evaluate and compare the effect of coronal thread size on marginal bone loss around fixtures, when both implants were provided with threads to top fixture. Materials methods Two groups implants, one a macro‐thread fixture ( A ) other micro‐thread B ), placed adjacent each in partially edentulous areas 20 patients. Bone implant was analyzed after 1 year functional loading. The losses loading compared using W ilcoxon's signed‐rank test. Results mean , 0.154 ± 0.144 mm;...

The objective of this study was to analyze 11 cases subcutaneous emphysema associated with dental procedures from a single hospital and discuss approaches for accurate diagnosis treatment the condition.The medical records patients who were treated related between January 2009 April 2017 analyzed retrospectively. Patients within facial area or that spread neck beyond, including region, assigned two groups compared in terms age, sex, durations antibiotic use, hospitalization, follow-up until...

The aim of this study was to evaluate the validity existing classification and difficulty index impacted mandibular third molars in clinical situations propose a more practical system.This included 204 154 patients; panoramic x-ray images were obtained before tooth extraction. Factors including age, sex, pattern impaction investigated. All classified scored for spatial relationship (1-5 points), depth (1-4 ramus (1-3 points). variables measured twice by same observer at minimum interval one...

Background: In order to verify the results of interdental papilla regeneration, various methods measuring length have been introduced. Invasive methods, such as bone probing under local anesthesia, might cause discomfort patients and possibly damage delicate gingival unit. The purpose present study was validate a method non‐invasively, using radiopaque material periapical radiograph. Methods: This involved 142 interproximal papillae in 40 with chronic periodontitis. distance between most...

This paper is a report on the initial trial for its kind in development of performance index autonomous mobile cleaning robot. The unique characteristic features robot have been identified as mobility, dust collection, and operation noise. Along with identification indices standardized performance-evaluation methods including corresponding evaluation platform each developed well. validity proposed has demonstrated by applying two commercial robots available market. can be applied to...

Purpose: To assess bony trabecular changes potentially caused by loading stress around dental implants using fractal dimension analysis.Methods: Fractal dimensions were measured in 48 subjects comparing radiographs taken immediately after prosthesis delivery with those 1 year functional loading.Regions of interest isolated, and analysis was performed the box-counting method Image J 1.42 software.Wilcoxon signed-rank test used to analyze difference before implant loading.Results: The mean...

PTEN, a tumor suppressor gene, has been found to be inactivated by structural abnormalities or epigenetic changes in several types of human cancers. Recently, studies have also suggested the possibility that PTEN gene is target genomic instability cancers displaying microsatellite (MSI). To investigate role oral squamous cell carcinomas, we screened entire coding region sequences and examined expression 81 stability (MSS) 5 MSI. Mutation was identified one MSS cancer (1/81; 1.2%) three MSI...

Abstract Objectives: To evaluate and to compare the effect of conical neck design on marginal bone loss around fixtures, when both implants were provided with micro‐threads top fixture. Materials methods: Two types implant, one a straight shape (S) other (C) retentive element fixture, placed adjacent each in partially edentulous areas 12 patients. Bone implant was analyzed after 1 year functional loading. The losses loading compared using Wilcoxon's signed‐rank test. Results: mean (S,...

Objectives The aim of this study was to reveal how collagenases (matrix metalloproteinase [MMP]-1, 8, 13) and tissue inhibitor 1 (TIMP-1) are expressed in immunohistochemistry retrodiscal temporomandibular joint disorder patients. Materials Methods This conducted on 39 patients who underwent discoplasty or discectomy. Immunohistochemical staining undertaken expression levels MMP-1, 13, TIMP-1 were evaluated. status internal derangement disc, osteoarthritis, effusion analyzed using magnetic...

The interproximal papilla between two adjacent implants is gaining critical interest in the implant dentistry. aims of this study were to evaluate effect 1) width keratinized mucosa, 2) distance from base contact point crestal bone, and 3) horizontal on radiographic dimension tip bone implants.This involved 72 papillae (interimplant papilla) 52 patients who had placed each other a prosthesis place more than 1 year. shortest radiopaque material interimplant most coronal portion was measured...

Background: The purpose of the present study was to investigate whether bone level on tooth side single dominant factor dimension an interproximal papilla around single‐tooth restorations made a microthread, conical seal, and platform‐switched design implant. Methods: Periapical radiographs were taken 17 patients, each whom treated with levels (Dt) implant (Di) sides recorded. (Ph) measured as shortest distance from top crestal bone. marginal implants also measured. Pearson correlation...

Background: The objective of this study was to evaluate the influence early exposure cover screw on crestal bone loss around implants. Methods: population consisted 19 patients who were treated with dental implants placed using a two‐stage surgical protocol and had exposed non‐exposed (20 20 implants). at in each patient evaluated periapical radiograph taken first surgery suprastructure insertion computerized image‐analysis system. compared Wilcoxon signed‐rank test. Results: mean 0.40 ±...

Abstract Purpose The aim of this retrospective cohort study was to evaluate the long‐term influence crown‐to‐implant ( C / I ) ratio and anatomical crown length on clinical conditions around Astra single dental implants placed in premolar molar regions. Materials Methods Seventy‐six subjects were selected from patients who had been treated with for replacement missing premolars molars. peri‐implant marginal bone level change assessed 1 year after functional loading 6 years loading. To...