Spine deviations and orthodontic treatment of asymmetric malocclusions in children (original) (raw)
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Early Orthodontic Treatments of Unilateral Posterior Crossbite: A Systematic Review
Journal of Clinical Medicine
We aimed to report an update of the systematic review by Petrén et al. (2003). The objective was to evaluate how orthodontic treatments can affect unilateral posterior crossbite (UPXB) in primary and early mixed dentition. Several databases were consulted, and articles published between January 2002 and March 2020 were selected. This review examines the following studies: randomized clinical trials, prospective and retrospective studies with concurrent untreated or normal control groups, and clinical trials comparing at least two treatment strategies. Among the 1581 articles retrieved from the searches, 11 studies were included. Quad-helix (QH) and expansion plate (EP) appliances were compared in three studies. One study compared rapid maxillary expansion (RME) treatment anchored on primary dentition otherwise on permanent molars. One study compared RME and a modified RME with arms extended until deciduous canine and EP. Four studies evaluated the effects of expansion appliances com...
Progress in Orthodontics
Objective This systematic review and meta-analysis aimed to critically appraise the available evidence of the effectiveness of early intervention of functional unilateral posterior crossbites (FPXB) between the ages of 6 and 12 years. Materials and methods Electronic search in four databases (PubMed, Scopus, Embase, and Google Scholar) for randomized controlled trials (RCTs) and controlled clinical trials (CCTs) was performed between 1st January 1990 and 31st October 2021. Methodological index for non-randomized studies (MINORS) for CCTs and Cochrane's risk of bias tool for RCTs were applied. The certainty of the evidence was evaluated according to the grading of recommendations, assessment, development, and evaluation (GRADE) approach. Results Nine studies (6 RCTs and 3 CCTs) were included in this review, and six of them were appropriate for quantitative synthesis. The meta-analysis revealed that the quad-helix (QH) was more effective than expansion plates (EP) in increasing th...
2010
OBJECTIVES : To present specific clinical interception procedures instituted to reduce malocclusion severity on developmental stage. Anterior tooth cross-bite, involving one or two permanent teeth, is a common form of malocclusion diagnosed in children about 6 years of age. RESULTS AND DISCUSSION : Various devices can be suggested for single tooth cases, like removable cantilevered double-helix apparatus with digital springs, which is one of the most efficient to intercept malocclusion. In the other hand, fixed appliance does not depend on patient’s cooperation and have greater action power and liberates more continuous forces. CONCLUSION : Dental anterior cross-bite, involving one tooth, can be corrected by means of the multi-loop arch wire with a double-helix, even in cases where adequate space for alignment is lacking.
Three-dimensional evaluation of early crossbite correction: a longitudinal study
The European Journal of Orthodontics, 2013
The aim of this longitudinal study was to assess whether correction of unilateral posterior cross bite in the primary dentition results in improvement of facial symmetry and increase of palatal surface area and palatal volume. A group of 60 Caucasian children in the primary dentition, aged 5.3 ± 0.7 years, were collected at baseline. The group consisted of 30 children with a unilateral posterior cross bite with midline deviation of at least 2 mm (CB) and 30 without malocclusion (NCB). The CB group was treated using an acrylic plate expander. The children ' s faces and dental casts were scanned using a three-dimensional laser scanning device. Non-parametric tests were used for data analysis to assess differences over the 30 months period of follow-up. The CB children had statistically signifi cantly greater facial asymmetry in the lower part of the face (P < 0.05) and a signifi cantly smaller palatal volume (P < 0.05) than the NCB children at baseline. There were no statistically signifi cant differences between the two groups at 6, 12, 18 , and 30 months follow-ups. Treatment of unilateral posterior cross bite in the primary dentition period resulted in an improvement of facial symmetry in the lower part of the face (P < 0.05) and increase of the palatal surface area and palatal volume (P < 0.001). At 30 months, relapse was observed in eight children (26.7 per cent). Treatment of unilateral posterior cross bite in the primary dentition improves facial symmetry and increases the palatal surface area and the palatal volume, though it creates normal conditions for normal occlusal development and skeletal growth.
RISK FACTORS AND PREDICTORS OF CROSSBITE AT CHILDREN
The Medical-Surgical Journal, 2015
Aim: was to determine the etiological risk factors and predictors of crossbite’ treatment at children. Material and methods: 270 cases with crossbites and 255 controls with other malocclusions were uniformly evaluated. The crossbites cases were divided in group I (anterior crossbite), group II (posterior crossbite) and group III (anterior and posterior crossbites) and were compared between them per Angle Class malocclusions, dysfunctional and dental causes, associations with other discrepancies, as well by need and types of treatment. Binary logistic regression was used to find risk factors and predictors. Results: The mean age of cases was 10.25±2.770 years. There were found significant differences between the groups of crossbites cases (p<0.05). There were identified risk factors (non-attrition of deciduous teeth, Angle Class II malocclusion and permanent teeth extraction) and protective factors of the crossbite (the tooth decay of deciduous teeth, eruption anomalies and tongue-thrust swallowing). There were found predictors for early corrective treatment (sucking habit, non-attrition and buds crowding) with a precision of 78.5%; for normal treatment (mouth breathing and buds crowding) with a precision of 71.5%; for late treatment (Angle Class III malocclusion, dental crowding and TMJ disorders) with a precision of 83.0%; for maxillary expansion (eruption anomalies and buds crowding) with a precision of 77.0%; for oral associated surgery (macrodontia and TMJ disorders) with a precision of 75.9% (HL test, p>0.05). Conclusion: The risk factors were dental furthermore, the predictors of treatment were adequate with dentition, etiology and disorders at age identification, suggesting the contribution of practitioners in intercepting this orthodontic emergency.
2016
Cross-bite is a severe orthodontic problem, which requires on time treatment. The consequences of neglecting the problem lead to more severe orthodontic problems such as underdevelopment of the maxilla-facial area. The cross-bite can be observed in the frontal segment as well as in the posterior segment. The authors have found out prevalence of the problem from 2% to 8% among the different nations. One of the main reasons for the cross-bite is the ectopic eruption of the teethpalatal for the upper and vestibular for the lower. A cross-bite in the anterior area can lead to the TMJ disorders, class III predisposition, periodontal problems and aesthetic problems. The problem should be treated right way when being diagnosed. The treatment of the problem can include removable or fixed appliances. The removable appliances have advantages, but the biggest disadvantage is the lack of the patient’s cooperation during the treatment. The patients with mixed dentition are in age when they are n...
Journal of Clinical Pediatric Dentistry, 2010
Objective: To determine morphological and functional effects on masticatory system of early treatment of functional posterior crossbite in young children. Study design: 23 children were divided into two groups:deciduous (DecG, n=11) and early mixed dentition (MixG, n=12), which received slow maxillary expansion. Maximal bite force, ultrasonographic masticatory muscle thickness and facial asymmetry were evaluated in three stages: before the start of treatment (s1), after three months of retention (s2), and after three months of observation (s3). The results were analyzed by Mann-Whitney U-test, correlation test, repeated measures ANOVA and backward stepwise multiple regression. Results. Bite force and temporalis thickness increased from s1 to s2 and s3 in both groups (p<0.05). Body mass index (BMI) increased significantly from s1 to s3 only in the MixG, but the masseter thickness did not differ among the stages. The correlation between the angle of the eye and the angle of the mou...
Effect of Bite Opening on the Correction of Dental Anterior Cross Bite – A Novel Approach
2021
nterior cross bite is a type of malocclusion in which maxillary anterior teeth are placed lingual to the mandibular anterior teeth.1,2 It can be a major esthetic and functional concern for the parents of a growing child. Crossbite can involve a single tooth or multiple teeth.3 Its prevalence is reported to be between 1.6 and 7.9%.1,4 In some studies its prevalence in children is reported to be as high as 27%.3,5 Anterior crossbite may be dental, skeletal or functional in origin.2 In dental crossbite, only tipping /lingual inclination of maxillary incisors are present with no dental compensation and basal bone abnormality.6 It is usually present in early mixed dentition phase. On the other hand, skeletal type of anterior crossbite is either because of an excessive mandibular growth or a deficient maxilla. Functional crossbite, which is also called pseudo-class III malocclusion, is because of the forward posture of mandible from its centric position.7 It might be present because of oc...