scholarly journals A retrospective and prospective view of orofacial myology

2005 ◽  
Vol 31 (1) ◽  
pp. 5-14
Author(s):  
Robert Mason ◽  
Keyword(s):  
Space Dimension ◽  
Negative Impact ◽  
Treatment Success ◽  
Open Bite ◽  
Dental Occlusion ◽  
Dental Arch ◽  
Common Denominator ◽  
Functional Appliance ◽  
Anterior Open Bite ◽  
Rest Posture

Orofacial myofunctional disorders include specific conditions or behaviors that can have a negative impact on oral postures and functions. Historically, interest has focused on behaviors in the horizontal plane, highlighted by tongue thrusting. Currently, the scope of practice also includes tongue forward posturing, lip incompetence, open mouth rest posture, thumb and finger sucking, bruxism, and biting habits involving lips, fingers, tongue and cheeks. The common denominator for myofunctional conditions is a change in the inter-dental arch vertical rest posture dimension, the dental freeway space. The purposes of myofunctional therapy include normalizing the freeway space dimension by eliminating noxious habits or postures related to freeway space change. Improving cosmesis with a lips-together rest posture is also an important treatment goal. The clinical significance of the freeway space is explained in terms of the dental consequences of differential eruption patterns that can develop from postural modification of the freeway space. When the freeway space is opened for extended periods beyond the normal range, the tongue can act as a functional appliance and contribute to the development of anterior open bite or a Class II malocclusion. A clinical procedure is proposed for evaluating the freeway space dimension and incorporating the information into treatment planning and evaluation of treatment success. While dentistry/orthodontics has a primary focus on dental occlusion, or teeth-together relationships, orofacial myologists focus on teeth-apart behaviors and postures that can lead to, or have already resulted in malocclusion.

Malocclusion: Social, Functional and Emotional Influence on Children

2012 ◽  
Vol 37 (1) ◽  
pp. 103-108 ◽  
Author(s):  
PA Martins-Júnior ◽  
LS Marques ◽  
ML Ramos-Jorge ML
Keyword(s):  
Quality Of Life ◽  
Negative Impact ◽  
Negative Influence ◽  
Open Bite ◽  
Anterior Open Bite ◽  
Chi Square ◽  
Exact Test ◽  
Chi Square Test ◽  
The Impact

Objectives: To determine the association between types of malocclusion and quality of life in children between 8-10 years of age and establish correlations between the severity of the malocclusion and particular bio-psychosocial variables. Study design: The sample was made up of 102 schoolchildren aged 8-10 years. Clinical exams were performed using the criteria of the Dental Aesthetic Index (DAI) to determine the presence and severity of malocclusions. The impact on quality of life was assessed using the Child Perceptions Questionnaire (CPQ8-10). Statistical analysis involved the chi-square test, Fisher's exact test and Spearman's correlation analysis. Results: Malocclusions affected 61% of the children examined. There was a positive correlation between total CPQ8-10 and DAI scores (P = 0.034). The following types of malocclusion had a significant effect on the quality of life of the children: upper anterior irregularity ≥ 2 mm, anterior open bite ≥ 2mm and diastema ≥ 2mm. Children with malocclusion experienced a greater negative impact on quality of life in comparison to those without malocclusion. Conclusions: Malocclusions had a negative influence over the quality of life of children between 8-10 years of age. More severe malocclusions had a greater impact with regard to social, emotional and functional aspects.

Severe Anterior Open Bite during Mixed Dentition Treated with Palatal Spurs

2016 ◽  
Vol 40 (3) ◽  
pp. 247-250 ◽  
Author(s):  
Mauro Henrique Andrade Nascimento ◽  
Telma Martins de Araújo ◽  
Andre Wilson Machado
Keyword(s):  
Case Report ◽  
Clinical Case ◽  
Early Stage ◽  
Open Bite ◽  
Mixed Dentition ◽  
Dental Occlusion ◽  
Anterior Open Bite ◽  
Oral Habits ◽  
Nutritive Sucking ◽  
Thumb Sucking

Deleterious oral habits, such as non-nutritive sucking or tongue thrusting, if not intercepted at an early stage can cause complex malocclusions. This manuscript describes a clinical case report of a successful interception of a severe anterior dental open bite caused by thumb sucking and tongue thrusting habits. The case involved a six-year-old female patient treated with the use of palatal spurs and maxillary removable crib followed by monitoring the development of dental occlusion. At the end of the interceptive phase acceptable results were achieved, showing the efficacy of the treatment undertaken as well the importance of an early intervention to remove harmful oral habits.

scholarly journals Vertical control in the Class III compensatory treatment

2013 ◽  
Vol 18 (2) ◽  
pp. 141-159 ◽  
Author(s):  
Márcio Costa Sobral ◽  
Fernando A. L. Habib ◽  
Ana Carla de Souza Nascimento
Keyword(s):  
Open Bite ◽  
Dental Arch ◽  
Class Iii ◽  
Anterior Open Bite ◽  
Vertical Control ◽  
Main Complaint ◽  
Curve Of Spee ◽  
Facial Pattern ◽  
Compensatory Treatment ◽  
Treatment Expectation

INTRODUCTION: Compensatory orthodontic treatment, or simply orthodontic camouflage, consists in an important alternative to orthognathic surgery in the resolution of skeletal discrepancies in adult patients. It is important to point that, to be successfully performed, diagnosis must be detailed, to evaluate, specifically, dental and facial features, as well as the limitations imposed by the magnitude of the discrepancy. The main complaint, patient's treatment expectation, periodontal limits, facial pattern and vertical control are some of the items to be explored in the determination of the viability of a compensatory treatment. Hyperdivergent patients who carry a Class III skeletal discrepancy, associated with a vertical facial pattern, with the presence or tendency to anterior open bite, deserve special attention. In these cases, an efficient strategy of vertical control must be planned and executed. OBJECTIVE: The present article aims at illustrating the evolution of efficient alternatives of vertical control in hiperdivergent patients, from the use, in the recent past, of extra-oral appliances on the lower dental arch (J-hook), until nowadays, with the advent of skeletal anchorage. But for patients with a more balanced facial pattern, the conventional mechanics with Class III intermaxillary elastics, associated to an accentuated curve of Spee in the upper arch and a reverse Curve of Spee in the lower arch, and vertical elastics in the anterior region, continues to be an excellent alternative, if there is extreme collaboration in using the elastics.

scholarly journals The National Dental Practice-Based Research Network Adult Anterior Open Bite Study: Treatment success

2020 ◽  
Vol 158 (6) ◽  
pp. e137-e150 ◽  
Author(s):  
Lauren S. Todoki ◽  
Samuel A. Finkleman ◽  
Ellen Funkhouser ◽  
Geoffrey M. Greenlee ◽  
Kelly W. Choi ◽  
...  
Keyword(s):  
Treatment Success ◽  
Open Bite ◽  
Research Network ◽  
Dental Practice ◽  
Anterior Open Bite ◽  
Practice Based Research

scholarly journals Comparison of posterior occlusion between patients with anterior open bite and scissor deep bite

2018 ◽  
Vol 46 (6) ◽  
pp. 2284-2291
Author(s):  
Kun Qi ◽  
Yifei Xu ◽  
Yuxia Hou ◽  
Mei-Qing Wang
Keyword(s):  
Vertical Dimension ◽  
Open Bite ◽  
Dental Arch ◽  
Anterior Open Bite ◽  
Deep Bite ◽  
Arch Width ◽  
Lingual Cusp ◽  
Orthodontic Patients ◽  
A Minor ◽  
Dental Arch Width

Objective A minor alteration in the posterior occlusal height elicits a large transformation in the anterior vertical dimension. Thus, the present study was performed to determine whether a posterior cusp-to-cusp relation that increases the posterior vertical dimension contributes to an anterior open bite. Methods Study casts were examined from orthodontic patients aged 10 to 27 years, 21 with an open bite and 28 with a scissor deep bite. A logistic regression model was used to analyze the contribution of various factors to these two anterior occlusal patterns. The dental arch width and number of worn cusps were compared between the two groups. Results Patients with an open bite had a significantly higher incidence of a posterior buccal–lingual cusp-to-cusp relation, wider mandibular arch in the molar region, and larger numbers of worn maxillary buccal cusps and mandibular lingual cusps than patients with a scissor deep bite. Conclusions A posterior buccal–lingual cusp-to-cusp relation is associated with a larger anterior vertical dimension, such as that in patients with an open bite.

scholarly journals Evaluation of masticatory and salivary parameters in preschool children with different morphological occlusion

2017 ◽  
Vol 20 (2) ◽  
pp. 38
Author(s):  
Maria Carolina Salomé Marquezin ◽  
Clízia Genoveze Gauch ◽  
Camila Alvarez Siqueira ◽  
Fernanda Yukie Kobayashi ◽  
Fernando Luiz Affonso Fonseca ◽  
...  
Keyword(s):  
Preschool Children ◽  
Flow Rate ◽  
Bite Force ◽  
Primary Dentition ◽  
Open Bite ◽  
Dental Occlusion ◽  
Dental Arch ◽  
Early Assessment ◽  
Normal Occlusion ◽  
The Relationship

<p><strong>Objective:</strong> To better understand the relationship between malocclusion and masticatory and salivary functions in the primary dentition, the aim was to evaluate the differences in masticatory performance (MP), facial morphology (FM), maximal bite force (BF) and salivary parameters in 65 preschool children with normal occlusion (n = 22), functional posterior crossbite (n = 20) and anterior open bite (n = 23), and to explore the relationship between these variables. <strong>Material and Methods:</strong> MP, FM and BF were assessed by sieving method, anthropometry and gnatodynamometer, respectively. Stimulated (SS) and unstimulated (US) saliva flow and composition were measured by automated colorimetric technique. Data were analyzed using ANOVA/Kruskal-Wallis, t-test/Wilcoxon and Pearson/Spearman correlation test. The relationship between SS flow rate and the independent variables were assessed using multiple linear regression. <strong>Results:</strong> The lower face dimension was smaller in crossbite-group, and a decreased BF in the crossbite-side of the dental arch was observed. BF correlated positively with intergonial width in open bite group. In malocclusion groups, better MP correlated with byzigomatic and intergonial widths. US flow rate was lower in crossbite-group and total protein concentration differed between SS and US saliva only in the crossbite-group, being lower in US. Amylase activity was higher in SS than US in all groups. SS flow rate related positively with age and negatively with the presence of malocclusion. <strong>Conclusion:</strong> In young subjects, significant correlations were found between masticatory parameters and facial dimensions; in addition, some important masticatory and salivary parameters differed between children with different morphological occlusions, hence the importance of the early assessment of these parameters.</p><p><strong>KEYWORDS</strong></p><p><strong> </strong>Bite Force; Dental Occlusion; Masticatory System; Primary Dentition.</p>

A case of anterior open bite with severely narrowed maxillary dental arch and hypertrophic palatine tonsils

2008 ◽  
Vol 35 (1) ◽  
pp. 5-15 ◽  
Author(s):  
Kotaro Tanimoto ◽  
Aya Suzuki ◽  
Yuki Nakatani ◽  
Tamami Yanagida ◽  
Yuki Tanne ◽  
...  
Keyword(s):  
Open Bite ◽  
Dental Arch ◽  
Anterior Open Bite ◽  
Palatine Tonsils

scholarly journals Negligible tooth resorptions after anterior open bite treatment using skeletal anchorage with miniplates

2020 ◽  
Vol 25 (4) ◽  
pp. 16-22
Author(s):  
Genivaldo dos Santos ◽  
Alberto Consolaro ◽  
Fernanda Meloti ◽  
Mauricio de Almeida Cardoso ◽  
Ertty Silva ◽  
...  
Keyword(s):  
Root Resorption ◽  
Open Bite ◽  
Dental Arch ◽  
Anterior Open Bite ◽  
Homogeneous Sample ◽  
Posterior Teeth ◽  
Anterior Teeth ◽  
Before And After ◽  
Applied Forces ◽  
External Apical Root Resorption

ABSTRACT Introduction: When miniplates are used as anchoring for orthodontic mechanics for anterior open bite correction by retraction of anterior teeth and posterior teeth intrusion and retraction, orthodontically induced inflammatory external apical root resorption is clinically negligible. Methods: A homogeneous sample of 32 patients was used, and the roots of the teeth were compared on CT scans performed before and after orthodontic treatment. Results: The observed root resorption was minimal, and this can be explained by the uniform distribution of forces in several teeth, simultaneously, in the set of the dental arch and in the bone that supports the teeth. Conclusion: The most important thing to prevent root resorption in orthodontic practice, besides being concerned with the intensity of the applied forces, is to be careful with its distribution along the roots of each tooth, in the dental arch and in the bone that supports the teeth.

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