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Clinical Oral Investigations Dec 2020To perform a review on the influence of preheating and/or heating of resinous and ionomeric materials on their physical and mechanical properties and to discuss the...
OBJECTIVES
To perform a review on the influence of preheating and/or heating of resinous and ionomeric materials on their physical and mechanical properties and to discuss the benefits and methods of preheating/heating that have been used.
MATERIAL AND METHODS
A search was performed in the Pubmed, Scopus, Scielo, and gray literature databases. In vitro studies published from 1980 until now were searched using the descriptors "composite resins OR glass ionomer cements OR resin cements OR adhesives AND heating OR preheating." Data extraction and quality of work evaluation were performed by two independent evaluators.
RESULTS
At the end of reading the search titles and abstracts, 74 articles were selected. Preheating of composite resins reduces viscosity, facilitates adaptation to cavity preparation walls, increases the degree of conversion, and decreases the polymerization shrinkage. Preheating of resin cements improves strength, adhesion, and degree of conversion. Dental adhesives showed good results such as higher bond strength to dentin. However, unlike resinous materials, ionomeric materials have an increase in viscosity upon heating.
CONCLUSIONS
Preheating improves the mechanical and physical properties. However, there is a lack of clinical studies to confirm the advantages of preheating technique.
CLINICAL RELEVANCE
Preheating of dental restorative materials is a simple, safe, and successful technique. In order to achieve good results, agility and training are necessary so the material would not lose heat until the restorative procedure. Also, care is necessary to avoid bubbles and formation of gaps, which compromises the best restoration performance.
Topics: Composite Resins; Dental Bonding; Dental Cements; Dental Materials; Dentin; Glass Ionomer Cements; Heating; Materials Testing; Resin Cements
PubMed: 33083851
DOI: 10.1007/s00784-020-03637-2 -
Journal of Dentistry Dec 2020To investigate the effectiveness of desensitizing agents (DA) on dentin hypersensitivity (DH) after non-surgical periodontal treatment (NSPT) through a systematic review... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
To investigate the effectiveness of desensitizing agents (DA) on dentin hypersensitivity (DH) after non-surgical periodontal treatment (NSPT) through a systematic review and meta-analysis.
DATA
The PICO strategy was used to include randomized clinical trials in human subjects with DH (P) after NSPT treated with DA (I) compared to those treated with placebo or control (C) to identify DH relief (O). The Cochrane guidelines and GRADE was used to classify the risk of bias and the quality of the evidence, respectively.
SOURCES
PubMed, Web of Science, Scopus, Lilacs, Cochrane Library databases, and OpenGrey were searched on the 20 of May 2020.
STUDY SELECTION
Nine studies were included in the quantitative synthesis. Five meta-analyses were performed. Three meta-analyzes assessed the effectiveness of DA compared to a placebo or control in relation to pain assessment stimuli and two meta-analyzes assessed the mechanism of action of DA. For the mechanical stimulus in overall analysis, the control group presented a higher mean of pain reduction (SMD 1.03 [0.73, 1.32], p < 0.001) with very low certainty of evidence. For water (SMD -0.78 [-1.22, -0.35], p = 0.0009) and evaporative in overall analysis (SMD -1.21 [-1.79, -0.64], p < 0.001) stimuli, the DA decreased DH pain with very low and low certainty of evidence, respectively.
CONCLUSION
Due to the limited quality of evidence, there is no definitive conclusion on the effectiveness of DA on DH after NSPT. Thus, further clinical studies with a low risk of bias and high-quality evidence are encouraged to reinforce the certainty of evidence on that issue.
CLINICAL SIGNIFICANCE
The use of desensitizing agents show promise for relief of dentin hypersensitivity after non-surgical periodontal therapy.
Topics: Dentin Desensitizing Agents; Dentin Sensitivity; Humans; Pain Measurement
PubMed: 33069772
DOI: 10.1016/j.jdent.2020.103498 -
Clinical Oral Investigations Dec 2020Controversy exists regarding the effectiveness of delayed toothbrushing in decreasing erosive tooth wear (ETW). The purpose of this systematic review and meta-analysis... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
Controversy exists regarding the effectiveness of delayed toothbrushing in decreasing erosive tooth wear (ETW). The purpose of this systematic review and meta-analysis was to assess the effects of delayed toothbrushing on ETW.
MATERIALS AND METHODS
This systematic review and meta-analysis was conducted according to the PRISMA statement and registered in PROSPERO (CRD42020200463). PubMed, Embase, and Web of Science databases were systematically searched with no publication year limits. Screening and data extraction were performed independently by two reviewers. In situ and in vitro studies comparing ETW after delayed and immediate toothbrushing following an erosive attack were included. Review Manager software 5.3 (The Cochrane Collaboration, Oxford, UK) was used for statistical analyses. Heterogeneity was assessed with the Cochran Q test and I statistics.
RESULTS
Of the 565 potentially relevant studies, 26 full-text articles were assessed for eligibility. Twelve articles were included in the systematic review, and 11 were included in the qualitative analyses. No significant difference in the ETW of human enamel was observed between delayed and immediate toothbrushing (P = 0.13), whereas significantly less ETW of bovine enamel was observed after delayed toothbrushing (P < 0.001). No significant difference in the ETW of bovine dentin was observed between delayed and immediate toothbrushing (P = 0.34). Studies on human dentin were not available. Subgroup analyses revealed a significant contribution of the use of fluoridated toothpaste to decreasing the ETW of human enamel after erosion and toothbrush abrasion (P = 0.02).
CONCLUSIONS
Bovine and human teeth behaved differently in response to erosion and toothbrush abrasion. Delayed toothbrushing after an erosive attack was not effective at decreasing the ETW of human enamel compared to immediate toothbrushing, whereas it was effective at decreasing the ETW of bovine enamel.
CLINICAL RELEVANCE
Delayed toothbrushing alone after the consumption of erosive foodstuffs or beverages is not capable of preventing erosive enamel wear.
Topics: Animals; Beverages; Cattle; Dental Enamel; Humans; Tooth Abrasion; Tooth Erosion; Tooth Wear; Toothbrushing
PubMed: 33052542
DOI: 10.1007/s00784-020-03614-9 -
Operative Dentistry Nov 2020One-step self-etch adhesive systems provide a clinical time gain, decreasing the number of clinical steps. When a clinician is able to follow a simpler process of... (Meta-Analysis)
Meta-Analysis
CLINICAL RELEVANCE
One-step self-etch adhesive systems provide a clinical time gain, decreasing the number of clinical steps. When a clinician is able to follow a simpler process of adhesion there is less chance of adhesive failure.
SUMMARY
Objective: A systematic review and meta-analyses were performed to evaluate whether one-step self-etching (1SSE) adhesive systems are as effective as two-step self-etching (2SSE) adhesives in noncarious cervical lesion (NCCL) restorations.Methods: This systematic review was conducted according to the guidelines of the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) and recorded in the PROSPERO (CRD42018096747). Electronic systematic searches were conducted in the following databases: PubMed/MEDLINE, Scopus, and Cochrane Library for published articles. Only randomized clinical trials that compared 1SSE with 2SSE adhesives systems were selected. The outcomes were retention, postoperative sensitivity, secondary caries, color match, marginal discoloration, marginal adaptation, and anatomical form.Results: The searches resulted in 476 studies. After applying the eligibility criteria, five randomized controlled trials were selected in which 822 restorations in NCCLs were distributed in 237 patients. The results showed no statistical difference between 1SSE and 2SSE in relation to retention (p=0.23; relative risk [RR]=1.55; 95% confidence interval [CI]=0.76, 3.19), postoperative sensitivity ( p=0.50; RR=3.00; 95% CI=0.13, 70.64), Secondary caries (p=0.63; RR=0.68; 95% CI=0.14, 3.31), color match (p=0.41; RR=0.64; 95% CI=0.23, 1.83), marginal discoloration (p=0.93; RR=1.02; 95% CI=0.65, 1.61), and anatomical form (p=0.56; RR=1.38; 95% CI=0.46, 4.13). However there was statistical difference in relation to marginal adaptation ( p=0.01; RR=1.95; 95% CI=1.14, 3.34).Conclusion: This systematic review with meta-analysis revealed that both 1SSE and 2SSE adhesive systems have comparable clinical effectiveness in a follow-up period of 12 to 24 months, except in relation to marginal adaptation.
Topics: Adhesives; Composite Resins; Dental Cements; Dental Marginal Adaptation; Dental Restoration, Permanent; Dentin-Bonding Agents; Humans; Resin Cements; Tooth Cervix
PubMed: 32503033
DOI: 10.2341/19-185-L -
The Journal of Adhesive Dentistry 2019To evaluate through a systematic review and meta-analysis whether the immediate and long-term bonding performance of universal adhesives would be improved by prior acid... (Meta-Analysis)
Meta-Analysis
PURPOSE
To evaluate through a systematic review and meta-analysis whether the immediate and long-term bonding performance of universal adhesives would be improved by prior acid etching.
MATERIALS AND METHODS
Two reviewers performed a literature search up to April 2018 in eight databases: PubMed, Web of Science, Cochrane Library, SciELO, Scopus, LILACS, IBECS, and BBO. Only studies that evaluated the dentin or enamel bond strength of universal adhesives using a self-etch or etch-and-rinse strategy were included. Analyses were carried out using RevMan 5.3.5 (The Nordic Cochrane Centre, The Cochrane Collaboration, Copenhagen, Denmark). A global analysis comparing self-etch or etch-and-rinse strategies and the influence of aging on bonding performance was performed with random-effects models at a significance level of p < 0.05.
RESULTS
A total of 59 in vitro studies were included in the meta-analysis. The enamel bond strength of universal adhesives was improved by the etch-and-rinse approach (p < 0.05). In dentin, this effect was observed for ultra-mild and intermediately strong universal adhesives (p < 0.05). Irrespective of the strategy employed, intermediately strong adhesives showed a decrease in bond strength after all types of aging. This effect was also observed for ultra--mild universal adhesives used in the etch-and-rinse approach (p < 0.05). Mild universal adhesives showed bond strength stability in both strategies (p > 0.05).
CONCLUSIONS
The in vitro evidence suggests that bonding performance of mild universal adhesives can be improved by using the selective enamel-etch strategy. Mild universal adhesives seem to be the more stable materials, in both etch-and-rinse or self-etch strategies.
Topics: Acid Etching, Dental; Dental Bonding; Dental Cements; Dentin; Dentin-Bonding Agents; Materials Testing; Resin Cements
PubMed: 30799468
DOI: 10.3290/j.jad.a41975 -
Effectiveness of Light Sources on In-Office Dental Bleaching: A Systematic Review and Meta-Analyses.Operative Dentistry 2019A systematic review and meta-analyses were performed to evaluate the efficacy of tooth color change and sensitivity of teeth following in-office bleaching with and... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
A systematic review and meta-analyses were performed to evaluate the efficacy of tooth color change and sensitivity of teeth following in-office bleaching with and without light gel activation in adult patients.
METHODS
This review was registered at PROSPERO (CRD 42017060574) and is based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA). Electronic systematic searches of PubMed/MEDLINE, Web of Science, and the Cochrane Library were conducted for published articles. Only randomized clinical trials among adults that compared in-office bleaching with and without light activation with the same bleaching gel concentrations were selected. The outcomes were tooth color change and tooth sensitivity prevalence and intensity.
RESULTS
Twenty-three articles from 1054 data sources met the eligibility criteria. After title and abstract screening, 39 studies remained. Sixteen studies were further excluded. Twenty-three studies remained for qualitative analyses and 20 for meta-analyses of primary and secondary outcomes. No significant differences in tooth color change or tooth sensitivity incidence were found between the compared groups; however, tooth sensitivity intensity decreased when light sources were applied.
CONCLUSION
The use of light sources for in-office bleaching is not imperative to achieve esthetic clinical results.
Topics: Adult; Dentin Sensitivity; Humans; Hydrogen Peroxide; Tooth; Tooth Bleaching; Tooth Bleaching Agents
PubMed: 29893625
DOI: 10.2341/17-280-L -
International Journal of Paediatric... Jul 2018Caries in primary teeth hinder the child to bite and chew and influence their development. Papacarie has the characteristics of selective removal of decayed tissue and... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Caries in primary teeth hinder the child to bite and chew and influence their development. Papacarie has the characteristics of selective removal of decayed tissue and can preserve healthy dentine to the maximum, but its efficiency has not been critically evaluated compared to conventional method.
AIM
This review is aiming at comparing the Papacarie and traditional method in caries removal in primary dental caries with children.
DESIGN
Comprehensive literature searching at PubMed, Embase, Cochrane Central Register of Controlled Trials, and Web of Science to January 2018.
RESULTS
Six randomized controlled trials (RCTs) and four prospective controlled clinical trials (CCTs) were included. The microbiota in caries dentine was significantly reduced using the Papacarie treatment (MD = 0.57, 95% CI 0.04 to 1.09, P = 0.03), and the anxiety feeling declined more in the Papacarie group (MD = -1.01, 95% CI -1.72 to -0.30, P < 0.005). There was a greater 200.79 (MD = 200.79, 95%CI 152.50 to 249.09, P < 0.00001) increase in time taken for the Papacarie treatment compared with the conventional method.
CONCLUSION
Papacarie exerts a positive effect in reducing the bacteria and decreases the pain during caries removal in primary teeth although it costed a longer treatment time compared with the conventional method.
Topics: Child; Controlled Clinical Trials as Topic; Dental Caries; Humans; Papain; Randomized Controlled Trials as Topic; Tooth, Deciduous; Treatment Outcome
PubMed: 29682851
DOI: 10.1111/ipd.12364 -
Journal of Cranio-maxillo-facial... Mar 2018It has been suggested that alveolar corticotomies may accelerate tooth movement, broaden the scope of malocclusion types that can be treated orthodontically, decrease...
INTRODUCTION
It has been suggested that alveolar corticotomies may accelerate tooth movement, broaden the scope of malocclusion types that can be treated orthodontically, decrease the need for extractions, and support long-term stability. Several techniques have been proposed, although the indications, ideal design and technical characteristics, potential complications, and objective clinician and patient satisfaction remain unclear. This systematic review aimed to provide scientific support to validate alveolar corticotomies as a reliable approach to accelerated orthodontics.
MATERIAL & METHODS
A literature search was conducted using MEDLINE (via PubMed), Cochrane, and EMBASE electronic databases until December, 2016. Articles written in any language other than English, Spanish, French, German, and Portuguese were excluded. Randomized controlled trials, controlled clinical trials, and case series involving healthy adult patients, with a sample size of at least 5 patients, and using alveolar corticotomy techniques were included. Two reviewers extracted the data independently.
RESULTS
Three randomized clinical trials, 2 prospective randomized clinical trials, 6 case series and 1 randomized controlled split-mouth study were included. No clinical trials were retrieved. Mean total treatment time in corticotomy-facilitated orthodontic cases was 8.85 months (range, 4-20 months); control groups treatment duration was 16.4 months (range, 7.8-28.3 months). Complications such as pain, swelling, and dentin hypersensitivity were reported. Few studies mentioned patient/clinician satisfaction. The faster and less invasive procedures appeared to be well tolerated. However, the methodological quality of the selected studies was low, with only low to moderate scientific evidence.
CONCLUSIONS
Corticotomy-facilitated orthodontics resulted in decreased treatment time. Few complications and low morbidity were found. More solid evidence-based research is required to support these results.
Topics: Adult; Alveolar Process; Combined Modality Therapy; Humans; Malocclusion; Orthodontics, Corrective; Time Factors
PubMed: 29395994
DOI: 10.1016/j.jcms.2017.12.030 -
Journal of Dentistry Apr 2018This study aimed to evaluate if in patients with dentin hypersensitivity (DH), the DH treatments are able to improve individuals' oral health related quality of life... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
This study aimed to evaluate if in patients with dentin hypersensitivity (DH), the DH treatments are able to improve individuals' oral health related quality of life (OHRQoL).
DATA AND SOURCES
A systematic review was performed based on PRISMA guidelines (PROSPERO CRD42016050864). Clinical trials reporting OHRQoL before and after DH treatment were included. The search was performed in the PubMed/MEDLINE, Scopus, Web of Science, Cochrane Library, LILACS, EMBASE and Scielo databases until May 2017. Hand searches and grey literature were included. Three researches independently selected the studies, extracted data, and assessed the methodological quality. The risk of bias was estimated based on the Cochrane Handbook for Systematic Reviews of Interventions. Meta-analysis was performed by I test. The quality of evidence was assessed using Grading of Recommendations Assessment, Development and Evaluation (GRADE).
STUDY SELECTION
Six clinical trials were included. DH was assessed by evaporative, cold, and tactile stimuli. OHRQoL was evaluated by OHIP-14 and DHEQ questionnaires. In-home and in-office desensitizing agents for DH treatment were used. The revised studies reported statistically significant reduction of DH and significant improvement in quality of life after treatment (p<0.05). Two studies were judged as high risk of bias. The studies presented high heterogeneity (I=0.8407). The evidence was very low to moderate.
CONCLUSIONS
The studies indicated decreasing of DH and improving of OHRQoL after DH treatment, although, they presented low to moderate methodological quality.
CLINICAL SIGNIFICANCE
The Oral Health Relate Quality of Life of whom complaint of DH can be improved after DH treatment.
Topics: Databases, Factual; Dentin; Dentin Desensitizing Agents; Dentin Sensitivity; Humans; Oral Health; Quality of Life
PubMed: 29262305
DOI: 10.1016/j.jdent.2017.12.007 -
Dental Materials : Official Publication... Nov 2017To analyze the evidence regarding the impact of head and neck radiotherapy (HNRT) on the mechanical behavior of composite resins and adhesive systems. (Review)
Review
OBJECTIVES
To analyze the evidence regarding the impact of head and neck radiotherapy (HNRT) on the mechanical behavior of composite resins and adhesive systems.
METHODS
Searches were conducted on PubMed, Embase, Scopus and ISI Web of Science databases using "Radiotherapy", "Composite resins" and "Adhesive systems" as keywords. Selected studies were written in English and assessed the mechanical behavior of composite resins and/or adhesive systems when bonding procedure was conducted before and/or after a maximum radiation dose ≥50Gy, applied under in vitro or in vivo conditions.
RESULTS
In total, 115 studies were found but only 16 were included, from which five evaluated the effect of in vitro HNRT on microhardness, wear resistance, diametral tensile and flexural strength of composite resins, showing no significant negative effect in most of reports. Regarding bond strength of adhesive systems, 11 studies were included from which five reported no meaningful negative effect when bonding procedure was conducted before simulated HNRT. Conversely, five studies showed that bond strength diminished when adhesive procedure was done after in vitro radiation therapy. Only two studies about dental adhesion were conducted after in vivo radiotherapy but the results were not conclusive.
SIGNIFICANCE
The mechanical behavior of composite resins and adhesive systems seems not to be affected when in vitro HNRT is applied after bonding procedure. However, bond strength of adhesive systems tends to decrease when simulated radiotherapy is used immediately before bonding procedure. Studies assessing dentin bond strength after in-vivo HNRT were limited and controversial.
Topics: Composite Resins; Dental Cements; Dental Stress Analysis; Head and Neck Neoplasms; Humans; Materials Testing; Surface Properties; Tensile Strength
PubMed: 28801178
DOI: 10.1016/j.dental.2017.07.014