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Journal of Dentistry Jun 2021A better understanding of the microstructure and mechanical properties of enamel and dentine may enable practitioners to apply the current adhesive dentistry protocols... (Review)
Review
OBJECTIVES
A better understanding of the microstructure and mechanical properties of enamel and dentine may enable practitioners to apply the current adhesive dentistry protocols to clinical cases involving dentine disorders (dentinogenesis imperfecta or dentine dysplasia).
DATA/SOURCES
Publications (up to June 2020) investigating the microstructure of dentine disorders were browsed in a systematic search using the PubMed/Medline, Embase and Cochrane Library electronic databases. Two authors independently selected the studies, extracted the data in accordance with the PRISMA statement, and assessed the risk of bias with the Critical Appraisal Checklist. A Mann-Whitney U test was computed to compare tissues damage related to the two dentine disorders of interest.
STUDY SELECTION
From an initial total of 642 studies, only 37 (n = 164 teeth) were included in the present analysis, among which 18 investigating enamel (n = 70 teeth), 15 the dentine-enamel junction (n = 62 teeth), and 35 dentine (n = 156 teeth). Dentine is damaged in cases of dentinogenesis imperfecta and osteogenesis imperfecta (p = 2.55E-21 and p = 3.99E-21, respectively). These studies highlight a reduction in mineral density, hardness, modulus of elasticity and abnormal microstructure in dentine disorders. The majority of studies report an altered dentine-enamel junction in dentinogenesis imperfecta and in osteogenesis imperfecta (p = 6.26E-09 and p = 0.001, respectively). Interestingly, enamel is also affected in cases of dentinogenesis imperfecta (p = 0.0013), unlike to osteogenesis imperfecta (p = 0.056).
CONCLUSIONS
Taking into account all these observations, only a few clinical principles may be favoured in the case of adhesive cementation: (i) to preserve the residual enamel to enhance bonding, (ii) to sandblast the tooth surfaces to increase roughness, (iii) to choose a universal adhesive and reinforce enamel and dentine by means of infiltrant resins. As these recommendations are mostly based on in vitro studies, future in vivo studies should be conducted to confirm these hypotheses.
Topics: Dental Cements; Dental Enamel; Dentin; Hardness; Tooth
PubMed: 33798638
DOI: 10.1016/j.jdent.2021.103654 -
European Journal of Paediatric Dentistry Jun 2023The present study aimed: i) to retrospectively evaluate the expansion movement predicted by the Clincheck® software and the achieved expansion using Invisalign First®...
AIM
The present study aimed: i) to retrospectively evaluate the expansion movement predicted by the Clincheck® software and the achieved expansion using Invisalign First® in children needing maxillary expansion to correct malocclusions; and ii) to critically compare these clinical results with the outcomes obtained for maxillary expansion using conventional removable and cemented expanders.
MATERIAL AND METHODS
The 3D digital models of the dental arches of 24 children undergoing orthodontic treatment exclusively with Invisalign First® aligners between 2018 and 2021 were sequentially selected for this study. Three digital models were analysed: pre-treatment (P0), the Clincheck®-predicted tooth positions (P1), and post-treatment (P2) models. The maxillary dental arch width and expansion efficiency were measured andcalculated. An in-depth review of the available literature on maxillary expansion was performed following PRISMA guidelines.
RESULTS
Invisalign First® was able to achieve a total effectiveness of maxillary expansion of 62.6%, compared to the predicted movement. Similarly, the total effectiveness of mandibular expansion was 61.6%.
CONCLUSIONS
Our data shows that Invisalign First® system can increase the arch width with maxillary expansion effectiveness, providing similar results to those achieved with conventional removable appliances. However, neither Invisalign First® aligners nor conventional removable expanders are as much efficient as cemented-retained appliances.
Topics: Child; Humans; Retrospective Studies; Tooth Movement Techniques; Treatment Outcome; Dentition, Mixed; Orthodontic Appliances, Removable; Malocclusion
PubMed: 37038757
DOI: 10.23804/ejpd.2023.1754 -
Journal of Oral and Maxillofacial... Mar 2016A systematic review was conducted to examine the evidence for the effectiveness and safety of corticotomy-facilitated orthodontics. (Review)
Review
PURPOSE
A systematic review was conducted to examine the evidence for the effectiveness and safety of corticotomy-facilitated orthodontics.
MATERIALS AND METHODS
Electronic databases (Ovid Medline, EMBASE, Cochrane, SCOPUS, and Web of Science) were searched for articles that examined the rate of corticotomy-facilitated orthodontic tooth movement and its effects on the periodontium, root resorption, and tooth vitality. Unpublished literature was searched electronically through ClinicalTrials.gov (http://www.clinicaltrials.gov) and the ISRCTN registry (http://www.controlled-trials.com). Relevant orthodontic journals and reference lists also were checked for eligible studies. Randomized clinical trials (RCTs) and controlled clinical trials (CCTs) were considered. Two article reviewers independently assessed the search results, screened the relevant articles, performed data extraction, and evaluated the methodologic quality of the studies.
RESULTS
Fourteen eligible articles (6 RCTs and 8 CCTs) were included in the review. There was a statistically meaningful increase in the rate of tooth movement compared with controls for all corticotomy techniques assessed. Some studies reported that acceleration in tooth movement was only temporary (lasting a few months). Corticotomy procedures did not seem to produce unwanted adverse effects on the periodontium, root resorption, and tooth vitality. The quality of the body of evidence was regarded as low owing to the presence of multiple methodologic issues, high risks of bias, and heterogeneity in the included articles.
CONCLUSION
Corticotomy procedures can produce statistically and clinically meaningful temporary increases in the rate of orthodontic tooth movement with minimal side-effects. Additional high-quality randomized clinical trials are needed to allow more definitive conclusions.
Topics: Dental Pulp; Humans; Osteotomy; Periodontium; Root Resorption; Tooth Movement Techniques
PubMed: 26608454
DOI: 10.1016/j.joms.2015.10.011 -
International Orthodontics Sep 2016We aimed to summarize/analyze, comprehensively and for the first time, the literature on the prevalence of congenitally missing teeth (CMT) in males and females and the... (Meta-Analysis)
Meta-Analysis Review
PURPOSE
We aimed to summarize/analyze, comprehensively and for the first time, the literature on the prevalence of congenitally missing teeth (CMT) in males and females and the CMT pattern, taking various associated and biasing factors into account.
METHODS
A search was performed independently by two authors during September 2012 till June 2013 to find all the available literature regarding CMT-associated factors and patterns comprising sex dimorphism, arches, anterior/posterior regions, unilateral/bilateral patterns, and involved teeth. The data were statistically analyzed.
RESULTS
Seventy-four studies were included. The mean CMT prevalence was 6.42±2.76% in males and 7.55±2.67% in females. Overall, CMT is more prevalent in females but only in epidemiological samples, and not in orthodontic or dental patients. Enrolling orthodontic/dental patients might increase the observed CMT in boys and/or reduce it in girls. Gender dimorphism was not affected by any of the factors: time, regions, or the biasing factors. There is not a significant predominance of maxillary or mandibular involvement, although the anterior segment is more likely to be affected.
CONCLUSIONS
CMT is more common in girls and in the anterior segment, regardless of the date of publication. Contrary to the commonly held belief regarding more CMT prevalence in female orthodontic patients, it was shown that in dental/orthodontic patients, CMT prevalence is higher in boys.
Topics: Anodontia; Bias; Dentition, Permanent; Female; Humans; Male; Prevalence; Risk Factors; Sex Characteristics
PubMed: 27522615
DOI: 10.1016/j.ortho.2016.07.016 -
Journal of Esthetic and Restorative... Jun 2022Measurement of the periodontal soft tissue dimension is crucial for clinical decision-making and aesthetic prognosis. However, the effectiveness of different measuring... (Review)
Review
OBJECTIVE
Measurement of the periodontal soft tissue dimension is crucial for clinical decision-making and aesthetic prognosis. However, the effectiveness of different measuring methods remains unclear. This systematic review aimed to explore the diagnostic accuracy of two non-invasive methods (namely CBCT and ultrasound) for gingival thickness measurement at different tooth positions.
MATERIALS AND METHODS
A systematic search was performed using PubMed (including Medline), PubMed Central, OVID, Cochrane Library, LILACS and OpenGrey. Studies focusing on comparisons between CBCT, ultrasound and direct transgingival probing were included. The means, SDs and correlation coefficients with 95% confidence intervals were extracted and analyzed using Review Manager and R software.
RESULTS
Twelve studies were selected. No significant difference was found between CBCT measurement and transgingival probing in the anterior and posterior dentition, and a moderate correlation was observed between these two methods (r = 0.41). A weak correlation was found between ultrasound measurement and transgingival probing (r = 0.32), and a slight but statistically significant difference was found when comparing ultrasonic devices and transgingival probing in the posterior area.
CONCLUSION
CBCT can be considered a relatively reliable method for gingival thickness measurement in both the anterior and posterior areas compared with direct probing. Ultrasonic devices provide limited accuracy in the posterior area but are relatively comparable with direct clinical assessments in the anterior area.
CLINICAL SIGNIFICANCE
Measurement location may affect the diagnostic accuracy and repeatability of gingival thickness measurements. Appropriate method selection in different clinical scenarios is crucial to aesthetic outcome prediction and decision-making.
Topics: Cone-Beam Computed Tomography; Gingiva; Incisor; Phenotype
PubMed: 35297167
DOI: 10.1111/jerd.12900 -
International Journal of Paediatric... Nov 2022To evaluate the clinical effectiveness of the eruption guidance appliances (EGAs) in treating malocclusion in the early mixed dentition. (Meta-Analysis)
Meta-Analysis Review
AIM
To evaluate the clinical effectiveness of the eruption guidance appliances (EGAs) in treating malocclusion in the early mixed dentition.
DESIGN
Electronic databases were comprehensively searched for the eligibility literature of the EGA treatment for a period spanning from the earliest available date in each database up to July 2021. Randomized controlled trials, controlled clinical trials, and prospective and retrospective cohort studies were included in the present review. The quality of clinical trials was assessed according to the Cochrane Collaboration's tools (RoB2.0 and ROBINS-I), whereas cohort studies were based on the Newcastle-Ottawa Scale (NOS). The data were gathered and synthesized with the Stata software (version 12).
RESULTS
The screen yielded 436 articles, of which 17 papers were potentially eligible, and 7 articles from 3 studies (1 RCT, 1 CCT, and 1 PCS) were qualified for the final review and analysis. The meta-analysis showed both favorable dentoalveolar and skeletal changes in short term. Both overjet and overbite had a significant decrease after treatment (MD = -2.38 mm, 95% CI: -2.82 to -1.94, p < .001, and MD = -2.43 mm, 95% CI: -3.52 to -1.35, p < .001, respectively), and SNB increased significantly by 0.73 degrees (95% CI: 0.17-1.28, p = .01). After the retention period, however, overbite had a significant increase of 0.88mm, which indicated the occurrence of a relapse (95% CI: 0.60-1.16, p < .001).
CONCLUSIONS
According to the existing evidence, the EGA treatment is effectively correcting overjet and overbite in the early mixed dentition in short term; furthermore, high-quality and long-term studies are warranted to determine its long-term effectiveness.
Topics: Dentition, Mixed; Humans; Malocclusion; Malocclusion, Angle Class II; Overbite; Prospective Studies; Retrospective Studies; Treatment Outcome
PubMed: 35191109
DOI: 10.1111/ipd.12961 -
Nutrition Reviews May 2022A relationship between obesity and poor oral health has been reported. (Meta-Analysis)
Meta-Analysis
CONTEXT
A relationship between obesity and poor oral health has been reported.
OBJECTIVE
To investigate the association between overweight/obesity and oral health in Mexican children and adolescents.
DATA SOURCES
A literature search was conducted of 13 databases and 1 search engine for articles published from 1995 onward.
DATA ANALYSIS
A total of 18 publications were included. Evidence was inconclusive and varied according to sociodemographic factors or outcome measuring tools. The Decayed, Missing, and Filled Teeth and Filled Teeth Surfaces indices and the decayed extracted filled teeth index outcomes were included in a random effects model meta-analysis. Pooled estimates showed no statistically significant oral health differences (measured via the decayed extracted filled teeth or the Decayed, Missing, and Filled Teeth Surfaces indexes) among body mass index (BMI) categories. However, pooled estimates of 6 studies showed that children with higher BMI had worse oral health in permanent teeth (measured via the Decayed Missing Filled Teeth Index) than children with lower BMI (overall mean difference, -0.42; 95%CI, -0.74, -0.11).
CONCLUSION
Whether there is an association between poor oral health and high BMI is inconclusive; however, both co-exist among Mexican children. Therefore, health promotion and prevention efforts should address common risk factors and broader risk social determinants shared between noncommunicable diseases.
Topics: Adolescent; Child; Dental Caries; Dentition, Permanent; Health Promotion; Humans; Obesity; Oral Health
PubMed: 34664672
DOI: 10.1093/nutrit/nuab088 -
American Journal of Orthodontics and... Dec 2021This systematic review aimed to identify, evaluate, and provide a synthesis of the available literature on the proximal enamel thickness (PET) of permanent teeth. (Meta-Analysis)
Meta-Analysis Review
INTRODUCTION
This systematic review aimed to identify, evaluate, and provide a synthesis of the available literature on the proximal enamel thickness (PET) of permanent teeth.
METHODS
The eligibility criteria were studies that assessed the PET of the permanent teeth. A search of studies in Medline (via PubMed), the Cochrane Library, Scopus, Web of Science, Embase, and Lilacs databases that measured PET was conducted until August 31, 2020. Two reviewers independently selected the studies, extracted the data, and assessed the risk of bias for systematic reviews involving cross-sectional studies. The quality of evidence was assessed using the Grading of Recommendations, Assessment, Development, and Evaluations approach. PET data generated from the systematic review were summarized by random-effects inverse-generic meta-analysis.
RESULTS
From 1388 potentially eligible studies, 11 were considered for systematic review and meta-analysis. The measurement of PET was done with radiographs, microscopes, microtomographs, or profilometers. In total, 4019 mesial and distal surfaces involving 2118 teeth were assessed. All included studies showed low to moderate risk of bias, whereas GRADE revealed that the level of evidence was low. Greater mesial and distal enamel thickness was observed for the premolars and molars, whereas it was least for the mandibular central incisors. The least difference of 0.02 mm (95% confidence interval [CI], -0.07 to 0.11 and -0.06 to 0.09, respectively) between mesial and distal sides was observed for the maxillary and mandibular second molars, whereas the maximum difference of 0.12 mm (95% CI, 0.07-0.17 and 0.07-0.16, respectively) was observed for the maxillary central incisors and maxillary first premolars. The meta-analysis indicated a moderate level of heterogeneity (I of 45%). The funnel plot revealed minimal publication bias.
CONCLUSIONS
The summary effect of the meta-analysis revealed that the thickness of the enamel on the distal aspect was greater than on the mesial aspect by an average of 0.10 mm (95% CI, 0.09-0.12). This finding would be of relevance to all disciplines of dentistry and especially for the clinician planning interproximal reduction, a procedure that is routinely done for clear aligner therapy.
Topics: Cross-Sectional Studies; Dental Caries; Dental Enamel; Dentition, Permanent; Humans; Molar
PubMed: 34420845
DOI: 10.1016/j.ajodo.2021.05.007 -
Pediatric Dentistry Nov 2020This study evaluated the evidence for associations between malnutrition and dental caries among children and adolescents in primary and permanent dentition. A search... (Meta-Analysis)
Meta-Analysis
This study evaluated the evidence for associations between malnutrition and dental caries among children and adolescents in primary and permanent dentition. A search was conducted in Medline, Cochrane, Google Scholar, Scopus, and Web of Science databases for studies comparing malnourishment and dental caries among children and adolescents. PRISMA guidelines were followed for the meta-analysis. Participants included well-nourished and malnourished children and adolescents ranging in age from six months to 19 years. The primary out-come was the prevalence of dental caries in primary and permanent dentition and early childhood caries (ECC) for children younger than six years. Quality was evaluated using the risk of bias assessment tool. Random-effects model was used to assess the odds ratio of the association between malnutrition and dental caries. Eleven studies met the inclusion criteria. There were 1,851 and 1,395 malnourished and well-nourished children available for analysis. Analysis of the longitudinal studies indicated that malnourished children were associated with a higher presence of caries (odds ratio equals 2.69, 95 percent confidence interval [CI] equals 2.05 to 3.53, P<0.001). Malnourished children were associated with a higher presence of dental caries in permanent dentition (odds ratio equals 3.56, 95 percent CI equals 2.21 to 5.74, P<0.001). Meta-analysis suggests that malnutrition is associated with dental caries in permanent dentition. However, no such association was observed between malnutrition with dental and ECC in the primary dentition.
Topics: Adolescent; Child; Child, Preschool; Dental Caries; Dentition, Permanent; Humans; Malnutrition; Tooth, Deciduous
PubMed: 33369551
DOI: No ID Found -
BMC Oral Health Jan 2021Infiltration and sealing are micro-invasive treatments for arresting proximal non-cavitated caries lesions; however, their efficacies under different conditions remain... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Infiltration and sealing are micro-invasive treatments for arresting proximal non-cavitated caries lesions; however, their efficacies under different conditions remain unknown. This systematic review and meta-analysis aimed to evaluate the caries-arresting effectiveness of infiltration and sealing and to further analyse their efficacies across different dentition types and caries risk levels.
METHODS
Six electronic databases were searched for published literature, and references were manually searched. Split-mouth randomised controlled trials (RCTs) to compare the effectiveness between infiltration/sealing and non-invasive treatments in proximal lesions were included. The primary outcome was obtained from radiographical readings.
RESULTS
In total, 1033 citations were identified, and 17 RCTs (22 articles) were included. Infiltration and sealing reduced the odds of lesion progression (infiltration vs. non-invasive: OR = 0.21, 95% CI 0.15-0.30; sealing vs. placebo: OR = 0.27, 95% CI 0.18-0.42). For both the primary and permanent dentitions, infiltration and sealing were more effective than non-invasive treatments (primary dentition: OR = 0.30, 95% CI 0.20-0.45; permanent dentition: OR = 0.20, 95% CI 0.14-0.28). The overall effects of infiltration and sealing were significantly different from the control effects based on different caries risk levels (OR = 0.20, 95% CI 0.14-0.28). Except for caries risk at moderate levels (moderate risk: OR = 0.32, 95% CI 0.01-8.27), there were significant differences between micro-invasive and non-invasive treatments (low risk: OR = 0.24, 95% CI 0.08-0.72; low to moderate risk: OR = 0.38, 95% CI 0.18-0.81; moderate to high risk: OR = 0.17, 95% CI 0.10-0.29; and high risk: OR = 0.14, 95% CI 0.07-0.28). Except for caries risk at moderate levels (moderate risk: OR = 0.32, 95% CI 0.01-8.27), infiltration was superior (low risk: OR = 0.24, 95% CI 0.08-0.72; low to moderate risk: OR = 0.38, 95% CI 0.18-0.81; moderate to high risk: OR = 0.20, 95% CI 0.10-0.39; and high risk: OR = 0.14, 95% CI 0.05-0.37).
CONCLUSION
Infiltration and sealing were more efficacious than non-invasive treatments for halting non-cavitated proximal lesions.
Topics: Databases, Factual; Dental Caries; Dentition, Permanent; Humans; Pit and Fissure Sealants; Tooth, Deciduous
PubMed: 33413327
DOI: 10.1186/s12903-020-01364-4