Changes in the masticatory cycle after treatment of posterior crossbite in children aged 4 to 5 years

Neto, Godofredo Pignataro; Puppin-Rontani, Regina Maria; Garcia, Renata Cunha Matheus Rodrigues

doi:10.1016/j.ajodo.2005.06.030

Cited by 14 publications

(14 citation statements)

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“…Masticatory/chewing cycle. Concerning assessment of the masticatory cycle before and after the treatment of posterior cross-bite, seven relevant studies were identified (8-10, [21][22][23][24]. Six of the studies looked at subjects treated with expansion of the upper dental arch with the use of an appliance, and one study looked at subjects where occlusal grinding had been performed to resolve the functional unilateral posterior cross-bite.…”

Section: Results Of Individual Studiesmentioning

confidence: 99%

“…All of the included articles found that before treatment, there was a higher prevalence of a reverse-cycle chewing pattern in the cross-bite samples than in normal control children (8)(9)(10)24) or in the cross-bite versus the non-cross-bite side (21)(22)(23). After the completion of treatment, however, there was a normalisation of the chewing pattern in four studies (21)(22)(23)(24), whereas the remaining three studies (8)(9)(10) found that although treatment tended to lower the prevalence of the reverse-cycle chewing pattern, it did not lead to a normalisation of the patients' abnormal cycle shape (in comparison with control individuals or the non-cross-bite side). In these studies, the prevalence of the reverse-cycle chewing pattern was still apparent more often in the treated cross-bite side than in the normal control groups or the initially non-cross-bite sides of the patients.…”

Section: Results Of Individual Studiesmentioning

confidence: 99%

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Functional changes after early treatment of unilateral posterior cross‐bite associated with mandibular shift: a systematic review

Tsanidis

Antonarakis

Kiliaridis

2015

J of Oral Rehabilitation

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The objective of this systematic review was to investigate whether oral functional asymmetry in children treated for unilateral functional posterior cross-bite disappears after orthodontic treatment with a resulting normalisation of oral functions. A literature search was carried out using PubMed, Web of Science and the Cochrane Library to locate longitudinal studies reporting on clinical oral functional changes, recorded by methods including masseter muscle thickness, bite force, masticatory/chewing cycle or electromyographic masticatory muscle activity, following the treatment of unilateral functional posterior cross-bite. All potential articles were initially screened according to their title and abstract, the full text of selected articles was evaluated, and the final study selection was made based on the pre-defined criteria. Data extraction was subsequently carried out. The initial literature search identified 736 articles, with 12 articles fulfilling pre-defined criteria. Although there was a lack of high-quality prospective studies, based on the available evidence, results suggest that the abnormal masticatory cycle associated with functional posterior unilateral cross-bite tends to normalise following early cross-bite treatment. Masticatory muscle activity shows an increase after early functional unilateral posterior cross-bite treatment, and this activity approaches normal levels. Insufficient evidence was available to conclude on maximal molar bite force or masticatory muscle thickness changes following early treatment of functional unilateral posterior cross-bite. Results should be interpreted with caution due to the lack of high-quality controlled studies. Well-designed prospective studies with large patient samples and long-term follow-up are necessary before making reliable conclusions concerning change in functional asymmetry following unilateral functional posterior cross-bite correction.

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Section: Results Of Individual Studiesmentioning

confidence: 99%

Section: Results Of Individual Studiesmentioning

confidence: 99%

Functional changes after early treatment of unilateral posterior cross‐bite associated with mandibular shift: a systematic review

Tsanidis

Antonarakis

Kiliaridis

2015

J of Oral Rehabilitation

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“…Some researchers have observed that a unilateral posterior crossbite at an early age leads to bone development of an asymmetrical mandibular ramus with larger vertical dimensions. They have frequently observed, on the crossbite side, the presence of a condyle in a more posterior position (2-5). …”

Section: Introductionmentioning

confidence: 99%

The influence of crossbite in early development of mandibular bone asymmetries in paediatric patients

Pérez

Nova-García

et al. 2017

J Clin Exp Dent

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BackgroundAll authors agree that posterior crossbite is a malocclusion that affects mandibular growth and may lead to skeletal asymmetry but there are few data on which age these modifications are easily quantifiable.Material and MethodsFor this study, the researchers used x-ray records of 217 children between 6 and 9 years of age, in the mixed dentition stage and with unilateral posterior crossbite. All the horizontal variables were traced and evaluated by the principal researcher, using the tpsDig version 2 computer program. Subsequently, a descriptive and statistical analysis was carried out, using the SPSS 17.0 for Windows program.Results and DiscussionAfter analysing the vertical mandibular traces on the x-rays, the researchers found, in all cases, quantifiable differences between the crossbite side and the non-crossbite side. The differences between horizontal variables were statistically significant (p<0.005) for the entire sample (H3-H4), in the group of boys (H3-H4) and in the 7-year old age group (H1-H2 and H3-H4). Differences were observed in the size of the horizontal measures between the crossbite side and the non-crossbite side. Some of these differences were significant as a function of the sex and age of the study sample. Key words:Crossbite, Mandibular asymmetry, Panoramic.

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“…Jankelson et al in 1975 [1] suggested that the functions of chewing system can be evaluated by mandibular movement trajectories, such as changes in mandibular displacement and velocity observed during chewing. This method has been widely used for analyzing the masticatory system function by many scientists [2,3] . Furthermore, studies also reported the relationship between occlusal patterns and masticatory system functions [2,3] .…”

Section: Introductionmentioning

confidence: 99%

Comparison in mandibular movements between subjects with deep bite and normal occlusion

Yu¹

2015

JDOC

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Introduction: Orthodontic treatment in-deep bite subjects has generally been focused on the correction of excessive vertical coverage (overbite); however, the impact on functional problems following treatment has not been well evaluated. This study aimed to investigate the differences in mandibular movements between deep bite and normal occlusion, and to compare the functional changes of mandible in the subjects with deep bite before and after treatment. Methods: This study included students from School of Dentistry, China Medical University (CMU), and employees from CMU Hospital. The participants were categorized into normal bite (n=11) and deep bite (n=16) groups. Considering the clinical practicability, convenience and affordability, Digi Gnatho software (Japan), was used to analyze mandibular movements recorded by digital video camera. Results: No significant difference was observed in the left side masticatory movements between two groups. Significant difference was only detected in the horizontal direction of right side mastication. All of the velocities and masticatory cycle duration of both sides showed no difference. In the mandibular border movements, protrusive movements in deep-bite group were distinct from normal occlusion group. Normal occlusion group had a larger range of mandibular movements compared to deep bite group. Conclusions: Different degrees of vertical coverage of the incisors not only presented differences in the ranges of masticatory movements and border movements, but also had an impact on the final occlusal phase of mastication.

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Changes in the masticatory cycle after treatment of posterior crossbite in children aged 4 to 5 years

Cited by 14 publications

References 13 publications

Functional changes after early treatment of unilateral posterior cross‐bite associated with mandibular shift: a systematic review

Functional changes after early treatment of unilateral posterior cross‐bite associated with mandibular shift: a systematic review

The influence of crossbite in early development of mandibular bone asymmetries in paediatric patients

Comparison in mandibular movements between subjects with deep bite and normal occlusion

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