Cost Effectiveness of Arthrocentesis Compared to Conservative Therapy for Arthralgia of the Temporomandibular Joint: A Randomized Controlled Trial.

Aims: To determine the cost effectiveness and cost utility of arthrocentesis as an initial treatment for temporomandibular joint (TMJ) arthralgia compared to usual care.

Methods: A two-armed, parallel-design, randomized controlled trial (RCT) was conducted in the Netherlands from January 2009 to June 2012 that included patients with TMJ arthralgia. Patients were randomly allocated to arthrocentesis (n = 40) or usual care (n = 40) for initial treatment.

Accuracy and reproducibility of dental replica models reconstructed by different rapid prototyping techniques.

Introduction: Rapid prototyping is a fast-developing technique that might play a significant role in the eventual replacement of plaster dental models. The aim of this study was to investigate the accuracy and reproducibility of physical dental models reconstructed from digital data by several rapid prototyping techniques.

Methods: Twelve mandibular and maxillary conventional plaster models from randomly chosen subjects were selected and served as the gold standard.

Inflammation is more distinct in temporomandibular joint osteoarthritis compared to the knee joint.

Purpose: Most of the current understanding of articular cartilage maintenance and degradation is derived from large load-bearing synovial joints, in particular the knee joint. The aim of this study was to identify valuable degradation markers for cartilage degradation in the temporomandibular joint (TMJ) by comparing the relative concentrations of carboxyterminal telopeptides of collagen types I and II (CTX-I and CTX-II), cartilage oligomeric matrix protein (COMP), and prostaglandin E2 (PGE2) in synovial fluid (SF) of TMJ and knee joints with cartilage degradation.

Materials And Methods: In this cross-sectional comparative study, participants were recruited from the University Medical Center Groningen, The Netherlands.

Oral appliance versus continuous positive airway pressure in obstructive sleep apnea syndrome: a 2-year follow-up.

Study Objectives: Oral appliance therapy has emerged as an important alternative to continuous positive airway pressure (CPAP) in treating patients with obstructive sleep apnea syndrome (OSAS). In this study we report about the subjective and objective treatment outcome of oral appliance therapy and CPAP in patients with OSAS.

Design: Cohort study of a previously conducted randomized clinical trial.

Alteration of cartilage degeneration and inflammation markers in temporomandibular joint osteoarthritis occurs proportionally.

Purpose: There is a growing interest in markers for cartilage degradation in synovial joints because of their potential diagnostic and prognostic value. Therefore, the aim of this study was to identify valuable degradation markers for temporomandibular joint (TMJ) osteoarthritis (OA) by comparing the relative concentrations of carboxyterminal telopeptides type I and II (CTX-I and II), cartilage oligomeric matrix protein (COMP), and prostaglandin E2 (PGE2) in the synovial fluid (SF) of TMJs with OA with those of healthy symptom-free TMJs.

Materials And Methods: In this cross-sectional case-control study, participants were recruited from the University Medical Center Groningen (Groningen, the Netherlands).

Lavage therapy versus nonsurgical therapy for the treatment of arthralgia of the temporomandibular joint: a systematic review of randomized controlled trials.

Aims: To carry out a systematic review of randomized controlled trials (RCTs) to investigate in patients with arthralgia of the temporomandibular joint (TMJ) the effectiveness of TMJ lavage compared to nonsurgical treatment with regard to pain intensity and mandibular range of motion.

Methods: The electronic databases Cochrane Controlled Trials Register (1960-2012), PubMed÷Medline (1966-2012), and Embase (1966-2012) were systematically searched for relevant RCTs. References of relevant articles were searched for additional studies, as well as citing reports.

Implant decontamination during surgical peri-implantitis treatment: a randomized, double-blind, placebo-controlled trial.

Aim: The objective of this randomized, double-blind, placebo-controlled trial was to study the effect of implant surface decontamination with chlorhexidine (CHX)/cetylpyridinium chloride (CPC) on microbiological and clinical parameters.

Material & Methods: Thirty patients (79 implants) with peri-implantitis were treated with resective surgical treatment consisting of apically re-positioned flap, bone re-contouring and surface debridement and decontamination. Patients were randomly allocated to decontamination with 0.

A comparative study to evaluate the effect of two different abutment designs on soft tissue healing and stability of mucosal margins.

Aim: To evaluate the effect of two different abutment designs on soft tissue healing and the stability of the mucosal margin in vivo.

Materials And Methods: Twenty-nine subjects received two, non-adjacent endosseous implants in the esthetic zone. Subsequently, conventional (control) and curved abutments (experimental) were placed in combination with a temporary restoration (left-right randomization).

Reliability and the smallest detectable difference of measurements on 3-dimensional cone-beam computed tomography images.

Introduction: The aim of this study was to determine the reliability and the measurement error (by means of the smallest detectable error) of 17 commonly used cephalometric measurements made on 3-dimensional (3D) cone-beam computed tomography images.

Methods: Twenty-five cone-beam computed tomography scans were randomly selected, and 3D images were rendered, segmented, and traced with the SimPlant Ortho Pro software (version 2.1, Materialise Dental, Leuven, Belgium).

A systematic review of the prognosis of short (<10 mm) dental implants placed in the partially edentulous patient.

Aim: This study evaluated, through a systematic review of the literature, the estimated implant survival rate of short (<10 mm) dental implants installed in partially edentulous patients.

Materials And Methods: A systematic search was conducted in the electronic databases of MEDLINE (1980-October 2009) and EMBASE (1980-October 2009) to identify eligible studies. Two reviewers independently assessed the methodological quality of the articles using specific study design-related quality assessment forms.

Reliability and the smallest detectable differences of lateral cephalometric measurements.

Introduction: The aim of this study was to determine the reliability and the measuring error (by means of the smallest detectable error) of 11 angular and 4 linear measurements commonly used for cephalometric analysis.

Methods: Twenty-five digital lateral cephalograms were randomly selected and traced with Viewbox software (version 3.1.

Accuracy of linear measurements from cone-beam computed tomography-derived surface models of different voxel sizes.

Introduction: The aims of this study were to determine the linear accuracy of 3-dimensional surface models derived from a commercially available cone-beam computed tomography (CBCT) dental imaging system and volumetric rendering software and to investigate the influence of voxel resolution on the linear accuracy of CBCT surface models.

Methods: Glass sphere markers were fixed on 10 dry mandibles. The mandibles were scanned with 0.

A systematic review of implant-supported maxillary overdentures after a mean observation period of at least 1 year.

Aim: The aim of the present systematic review of implant-supported maxillary overdentures was to assess the survival of implants, survival of maxillary overdentures and the condition of surrounding hard and soft tissues after a mean observation period of at least 1 year.

Material And Methods: MEDLINE (1950-August 2009), EMBASE (1966-August 2009) and CENTRAL (1800-August 2009) were searched to identify eligible studies. Two reviewers independently assessed the articles.

Health-related quality of life, employment and disability in patients with Sjogren's syndrome.

Objective: To compare health-related quality of life (HR-QOL), employment and disability of primary and secondary SS (pSS and sSS, respectively) patients with the general Dutch population.

Methods: HR-QOL, employment and disability were assessed in SS patients regularly attending the University Medical Center Groningen (n = 235). HR-QOL, employment and disability were evaluated with the Short Form-36 questionnaire (SF-36) and an employment and disability questionnaire.

Anterior disc displacement with reduction and symptomatic hypermobility in the human temporomandibular joint: prevalence rates and risk factors in children and teenagers.

Aims: To assess the prevalence rates and risk factors of anterior disc displacement with reduction (ADDR) and symptomatic hypermobility in a large sample of children and teenagers. Prevalence rates were also established in samples of young adults and adults.

Methods: Children from 7 Dutch primary and secondary schools (n = 1,833) aged 4 to 18 years (mean age +/- SD 10.

Case report of a posterior disc displacement without and with reduction.

This article presents the case of a patient with an acute posterior disc displacement without reduction (PDDWR), whose temporomandibular joint (TMJ) showed, after physiotherapeutic manipulation, the characteristics of a posterior disc displacement with reduction (PDDR). Opto-electronic condylar movement recordings in both the PDDR state and the PDDWR state, and magnetic resonance imaging (MRI) scans of the TMJ in the PDDR state were carried out to document the case. The first 2 physiotherapeutic manipulations were initially successful in reducing the disc, but a few days later the joint showed a relapse to the PDDWR state.

A comparative study between clinical and instrumental methods for the recognition of internal derangements with a clicking sound on condylar movement.

Aims: To compare the results of 3 methods of recognizing internal derangements with a clicking sound on condylar movement: 2 function-based methods (clinical examination and condylar movement recording) and 1 anatomy-based method (magnetic resonance imaging [MRI]).

Methods: For the recognition of an anterior or posterior disc displacement with reduction and of hypermobility within the temporomandibular joint (TMJ), 42 participants underwent a clinical examination, an opto-electronic movement recording, and an MRI scan. The examinations were executed in a single-blind design, with different experienced examiners for each technique.

Mandibular movement characteristics of an anterior disc displacement with reduction.

Aims: According to the Research Diagnostic Criteria (J Craniomandib Disord 1992;6(4):301-355), an anterior disc displacement with reduction (ADD) is characterized by reciprocal clicking with the opening click occurring at a mouth opening at least 5 mm greater than that of the closing click. The aim of this study was to test whether the 5-mm criterion of the RDC is characteristic for a click due to an ADD.

Methods: From 30 participants with a unilateral ADD, recordings of mandibular movements with 6 degrees of freedom as well as joint sound recordings were made.