Prosthetic complications and failures of implant-supported fixed partial dentures: A scoping review.

Statement Of Problem: Although high survival rates of implant-supported fixed partial dentures (ISFPDs) have been reported, evidence for complications, failures, and factors that interfere with their longevity is lacking.

Purpose: The purpose of this scoping review was to review the literature to investigate the most common failures and complications of ISFPDs.

Material And Methods: This review followed the preferred reporting items for systematic reviews and meta-analyses scoping review (PRISMA ScR) guidelines, and the methodology was registered on the open science framework (osf.

Pain, deep neck flexors performance, disability, and head posture in individuals with temporomandibular disorder with and without otological complaints.

Background: Otological complaints (OC) are highly prevalent in subjects with temporomandibular disorders (TMD) and so is the risk of neck dysfunctions.

Objective: To evaluate pain, deep neck flexor (DNF) performance, disability, and head and neck posture of individuals with TMD with and without OC.

Methods: In this cross-sectional study, 57 individuals were divided into a group with TMD and OC (n= 31) and a group with TMD without OC (n= 26).

Otoneurological assessment and quality of life of individuals with complaints of dizziness and temporomandibular disorders: a case-control study.

Objectives: To evaluate the impact of temporomandibular disorders on the quality of life of patients with dizziness.

Methods: An observational, case-control study evaluated 60 individuals with dizziness (20 cases and 40 controls), who were matched for gender and age. The individuals underwent to anamnesis, overall physical and otoneurological examination, tonal and vocal audiometry and impedanciometry, video head impulse test and the dizziness handicap inventory questionnaire.

Are neck pain, disability, and deep neck flexor performance the same for the different types of temporomandibular disorders?

Objective: To evaluate neck pain, disability, and deep neck flexor (DNF) performance of individuals with temporomandibular disorders (TMD).

Methods: Eighty individuals were divided into the following: arthrogenic TMD (n = 40), myogenic TMD (n = 12), and mixed TMD (n = 28). Neck pain intensity, neck disability, and DNF performance were evaluated.

Association of sleep quality and psychological aspects with reports of bruxism and TMD in Brazilian dentists during the COVID-19 pandemic.

Background: Dentists are exposed to contamination by SARS-CoV-2 due to dental interventions, leading to a state of alert and potential risk of negative impact in mental health and sleep quality, associated with Temporomandibular Disorder (TMD) and bruxism.

Objective: to evaluate the psychosocial status, sleep quality, symptoms of TMD, and bruxism in Brazilian dentists (DSs) during the COVID-19 pandemic.

Methodology: The sample (n=641 DSs) was divided into three groups (quarantined DSs; DSs in outpatient care; and frontline professionals), which answered an electronic form containing the TMD Pain Screening Questionnaire (Diagnostic Criteria for Temporomandibular Disorders - DC/TMD), the Pittsburgh Sleep Quality Index (PSQI), the Depression, Anxiety and Stress Scale (DASS-21), and the sleep and awake bruxism questionnaire.

Short-Term Effect of Scalp Acupuncture on Pain, Sleep Disorders, and Quality of Life in Patients with Temporomandibular Disorders: A A Randomized Clinical Trial.

Objetive: To evaluate the effects of Chinese scalp acupuncture in patients diagnosed with temporomandibular disorders (TMD) on pain, sleep, and quality of life (QOL), and compare these results with the results from traditional therapies.

Methods: Sixty patients diagnosed with TMD using the research diagnostic criteria for temporomandibular disorders (RDC/TMD) were allocated into four treatment groups: counseling (C = 15), occlusal splint (OS = 15), scalp acupuncture (SA = 15), and manual therapy (MT = 15). Participants were re-evaluated within 1 month.

Temporomandibular disorders and the use of traditional and laser acupuncture: a systematic review.

Objective: To evaluate current studies to establish and compare the efficacy of traditional and laser acupuncture in reducing the signs and symptoms of temporomandibular disorders (TMD).

Methods: PubMed, Cochrane, Scopus, and Web of Science databases were searched. Clinical, controlled, and randomized trials written in English and having used traditional or laser acupuncture as therapy for TMD and RDC/TMD or DC/TMD as a diagnostic criterion for TMD were included.

Manual Therapy in the Treatment of Myofascial Pain Related to Temporomandibular Disorders: A Systematic Review.

Aims: To evaluate the effectiveness of manual therapy in the treatment of myofascial pain related to temporomandibular disorders.

Methods: Randomized clinical trials were searched in the Cochrane Library, MEDLINE, Web of Science, Scopus, LILACS, and SciELO databases using the following keywords: temporomandibular joint disorders; craniomandibular disorders; myofascial pain syndromes; myofascial pain; exercise therapy; myofunctional therapy; physical therapy modalities; clinical trial; prospective studies; and longitudinal studies. Studies using the RDC/TMD and manual therapy for myofascial pain were included.

Conservative therapies to treat pain and anxiety associated with temporomandibular disorders: a randomized clinical trial.

Introduction: Temporomandibular dysfunction (TMD) is a condition that affects the stomatognathic system.

Objective: To determine the effect of treatment with an occlusal splint (OS), manual therapy (MT), counselling (CS) and the combination of an occlusal splint and counselling (OSCS) on pain and anxiety in patients with TMD.

Materials And Methods: A randomised clinical trial was conducted with 89 patients diagnosed with TMD through RDC/TMD (Research Diagnostic Criteria for Temporomandibular Disorders) and divided into four groups of treatment: OSCS (n = 25); OS (n = 24); MT (n = 21); and CS (n = 19).

Relationship between anxiety, quality of life, and sociodemographic characteristics and temporomandibular disorder.

Objectives: The aim of this study was to evaluate the relationship between anxiety, quality of life (QL), and sociodemographic aspects and temporomandibular disorders (TMDs) and to assess the predisposition to TMDs in patients with low QL and anxiety.

Study Design: In total, 120 patients (60 TMD/60 non-TMD) were screened to assess QL (World Health Organization Quality of Life Brief Version [WHOQOL]); anxiety (Beck Anxiety Inventory [BAI]; the State-Trait Anxiety Inventory[STAI-S and -T]; the Hospital Anxiety and Depression Scale [HADS]); and TMD (Research Diagnostic Criteria for Temporomandibular Disorders-RDC/TMD). Pearson's χ test, the Student t test, odds ratio (OR) analysis, and nonconditional logistic regression analysis were performed.

Short-term effectiveness of conservative therapies in pain, quality of life, and sleep in patients with temporomandibular disorders: A randomized clinical trial.

: To evaluate, in the short term, the effectiveness of conservative therapies in pain, quality of life, and sleep in TMD patients.: Eighty-nine TMD patients diagnosed by RDC-TMD were distributed in occlusal splints (OS; n= 24), manual therapy (MT; n= 21), counseling (C; n= 19), and OS associated with C (OSC; n= 25) therapy groups. Data collection was performed at baseline and within one month by VAS (pain), PSQI (sleep quality -SQ), WHOQOL-BREF (Quality of life - QL) and OHIP-14 (quality of life related to oral health -QLOH).

Efficacy of prostheses bonding using silane incorporated to universal adhesives or applied separately: A systematic review.

Currently, the long-term success of esthetic rehabilitation with ceramics is required. Hence, professional knowledge about the most indicated dental material for each clinical situation as well as its usage protocol is essential. The aim of this systematic review of clinical and laboratorial studies was to compare the bond strength of prostheses using silane incorporated to universal adhesives or applied separately.

Influence of resin cement thickness and temperature variation on mechanical behavior of dental ceramic fragment restoration.

To evaluate the stress behavior of ceramic fragment restoration, varying the thickness of the cement layer and intraoral temperature variation. A solid model of a upper lateral incisor was obtained and a defect at enamel distal/incisal edge was restored with a ceramic fragment. Based on this initial model, 4 different models (M) were built: M1 - absence of cement layer (CL) (0 μm of thickness); M2 - CL with an uniform thickness of 50 μm; M3 - CL with 50 μm at the margin of ceramics and 100 μm in the inner area far from margins; M4 - CL with 50 μm at the margin of ceramics and 200 μm in the inner area far from margins.

Acupuncture in Temporomandibular Disorder Myofascial Pain Treatment: A Systematic Review.

Aims: To carry out a systematic review of clinical trials published up to 2015 to determine the effectiveness of acupuncture in treating myofascial pain in temporomandibular disorder (TMD) patients.

Methods: The databases used were the Cochrane Library, PubMed, Scopus, and Web of Science; the dates of the articles surveyed ranged from 1990 to May 2015. The inclusion criteria were: (1) publications in English, Portuguese, or Spanish; (2) controlled clinical trials; (3) patients with TMD of muscular origin; and (4) studies that used acupuncture or laser acupuncture only for treatment.

Effects of implant diameter and prosthesis retention system on the reliability of single crowns.

Purpose: The probability of survival of implant-supported prostheses may be affected by the interplay between different implant diameters supporting screwed or cemented crowns. The purpose of this study was to investigate the effect of implant diameter and prosthesis retention system on the reliability and failure modes of single crowns.

Materials And Methods: Internal-hexagon implants were divided into six groups (n = 21 each) according to implant diameter (3.

Zirconia-based dental crown to support a removable partial denture: a three-dimensional finite element analysis using contact elements and micro-CT data.

Veneer fracture is the most common complication in zirconia-based restorations. The aim of this study was to evaluate the mechanical behavior of a zirconia-based crown in a lower canine tooth supporting removable partial denture (RPD) prosthesis, varying the bond quality of the veneer/coping interface. Microtomography (μCT) data of an extracted left lower canine were used to build the finite element model (M) varying the core material (gold core - MAu; zirconia core - MZi) and the quality of the veneer/core interface (complete bonded - MZi; incomplete bonded - MZi-NL).

Stress distribution on dentin-cement-post interface varying root canal and glass fiber post diameters. A three-dimensional finite element analysis based on micro-CT data.

Objective: The aim of the present study was to analyze the influence of root canal and glass fiber post diameters on the biomechanical behavior of the dentin/cement/post interface of a root-filled tooth using 3D finite element analysis.

Material And Methods: Six models were built using micro-CT imaging data and SolidWorks 2007 software, varying the root canal (C) and the glass fiber post (P) diameters: C1P1-C=1 mm and P=1 mm; C2P1-C=2 mm and P=1 mm; C2P2-C=2 mm and P=2 mm; C3P1-C=3 mm and P=1 mm; C3P2-C=3 mm and P=2 mm; and C3P3-C=3 mm and P=3 mm. The numerical analysis was conducted with ANSYS Workbench 10.

Tilted and short implants supporting fixed prosthesis in an atrophic maxilla: a 3D-FEA biomechanical evaluation.

Purpose: This study compared the biomechanical behavior of tilted long implant and vertical short implants to support fixed prosthesis in an atrophic maxilla.

Materials And Methods: The maxilla model was built based on a tomographic image of the patient. Implant models were based on micro-computer tomography imaging of implants.

Mechanical testing of implant-supported anterior crowns with different implant/abutment connections.

Purpose: This study evaluated the reliability and failure modes of anterior implants with internal-hexagon (IH), external-hexagon (EH), or Morse taper (MT) implant-abutment interface designs. The postulated hypothesis was that the different implant-abutment connections would result in different reliability and failure modes when subjected to step-stress accelerated life testing (SSALT) in water.

Materials And Methods: Sixty-three dental implants (4 × 10 mm) were divided into three groups (n = 21 each) according to connection type: EH, IH, or MT.

Influence of platform and abutment angulation on peri-implant bone. A three-dimensional finite element stress analysis.

The aim of this study was to evaluate stress distribution on the peri-implant bone, simulating the influence of Nobel Select implants with straight or angulated abutments on regular and switching platform in the anterior maxilla, by means of 3-dimensional finite element analysis. Four mathematical models of a central incisor supported by external hexagon implant (13 mm × 5 mm) were created varying the platform (R, regular or S, switching) and the abutments (S, straight or A, angulated 15°). The models were created by using Mimics 13 and Solid Works 2010 software programs.

Reliability evaluation of alumina-blasted/acid-etched versus laser-sintered dental implants.

Step-stress accelerated life testing (SSALT) and fractographic analysis were performed to evaluate the reliability and failure modes of dental implant fabricated by machining (surface treated with alumina blasting/acid etching) or laser sintering for anterior single-unit replacements. Forty-two dental implants (3.75 × 10 mm) were divided in two groups (n=21 each): laser sintered (LS) and alumina blasting/acid etching (AB/AE).

Biomechanical evaluation of internal and external hexagon platform switched implant-abutment connections: An in vitro laboratory and three-dimensional finite element analysis.

Objectives: The aim of this study was to assess the effect of abutment's diameter shifting on reliability and stress distribution within the implant-abutment connection for internal and external hexagon implants. The postulated hypothesis was that platform-switched implants would result in increased stress concentration within the implant-abutment connection, leading to the systems' lower reliability.

Methods: Eighty-four implants were divided in four groups (n=21): REG-EH and SWT-EH (regular and switched-platform implants with external connection, respectively); REG-IH and SWT-IH (regular and switched-platform implants with internal connection, respectively).

Influence of microthreads and platform switching on stress distribution in bone using angled abutments.

Purpose: To evaluate the stress distribution in peri-implant bone by simulating the effect of an implant with microthreads and platform switching on angled abutments through tridimensional finite element analysis. The postulated hypothesis was that the presence of microthreads and platform switching would reduce the stress concentration in the cortical bone.

Methods: Four mathematical models of a central incisor supported by an implant (5.

Short implant to support maxillary restorations: bone stress analysis using regular and switching platform.

Purpose: The aim of this study was to evaluate stress distribution on peri-implant bone simulating the influence of implants with different lengths on regular and switching platforms in the anterior maxilla by means of three-dimensional finite element analysis.

Materials And Methods: Four mathematical models of a central incisor supported by an external hexagon implant (diameter, 5.0 mm) were created, varying the length (15.