Prevalencia de maloclusión en la dentición primaria en el municipio de Cáceres, Brasil

Objective: To evaluate the occlusal condition of children with 5 years of age examined by the Brazil Oral Health 2003 Project in Cáceres city, Brazil. Material and Methods: The sample consisted of 170 preschool children raffled from 20 schools participant of the project. For the analysis of the occlusal it was used the 1987' World Health Organization index, modified by the Public Health School of São Paulo University, Brazil, in 1996, which establish criteria according to severity of malocclusion. Results: It was observed that 65.3 % of children presented normal occlusion, 31.18 % presented light occlusal problems and 2.35 % showed moderate/severe. Conclusion: Due to the large presence of malocclusion, it is necessary this kind of survey, so that the city can plan and perform preventive orthodontic treatments, besides other preventive proceeding, to obtain a proper oral environment for the normal evolution of occlusion. © 2008 1995, Editorial Ciencias médicas.

Presence and morphology of the molar tubercle according to dentition, hemi-arch and sex

The purpose of this study was to assess the presence and the degree of expression of the molar tubercle according to sex, dentition and hemi-arches. Study casts of 126 patients were assessed, and those were under orthodontic treatment at the University of Franca, UNIFRAN; they were from both sexs, from 4 to 13 years old. The upper second primary molars and the upper first permanent molars, from both sides, were evaluated regarding the presence and the degree of expression of the molar tubercle. For an association study, the qui-square test was utilized. The concordance about the presence or absence of the molar tubercle according to dentition, hemi-arch and sex, was estimated by the Kappa Statistics. There was a sexual dimorphism concerning the presence/absence of the molar tubercle (p=0.009), however there was no significant association between the degree of expression of the tubercle and the sex (p=0.791). The molar tubercle was more frequently observed in the male sex, in upper second primary molars and in the form of depression. There was a significant and "moderate" concordance between the left and right sides in primary dentition (k=0.596), there was a "good" concordance in permanent dentition (k=0.708) and a "weak" and significant concordance between the presence of the molar tubercle and dentition (k=0.207).

Aspectos clínicos y morfológicos de los dientes supernumerarios

The hyperdontia teeth is an anomaly of unknown cause, characterized by increased numbers of teeth. It occurs more frequently in the maxilla, preferably in males, and is more common in permanent dentition. The presence of supernumerary teeth can be responsible for alterations in the permanent dentition, such as the delay in the eruption and dislocations. In addition, the patient may have abnormal occlusion, resorption of adjacent teeth and cyst formation. This article describes in a male patient, 9 years old, the presence of two upper right lateral incisor and one upper left lateral incisor, permanent, partially erupted. Radiological examination revealed a second left upper lateral incisor, unerupted. It should be noted that both, in the region of the 1.2 as in 2.2, the teeth showed normal anatomy and not the conoid appearance commonly observed in supernumerary teeth. In our case, in order to perform orthodontic treatment surgical removal of the teeth noted above was indicated.

Multidisciplinary approach in the teaching of dental sculpture and anatomy

The purpose of the Dental Sculpture and Anatomy discipline is to introduce undergraduate students to the study of the anatomic and morphological characteristics of permanent and primary human dentition, through classes, books and cognitive and psychomotor activities. This discipline supports the teaching of specific knowledge necessary for a more extensive education, involving interdisciplinarity as a means of knowledge exchange among several areas of dentistry, to achieve comprehensive professional education. Students must recognize the dental morphology from samples of preserved teeth, and reproduce the morphology through three-dimensional models made of stone or wax blocks. In this article, the authors describe the process for producing teeth collars and macro dental models made of stone, their importance and benefits of utilization. The purpose of the study was to encourage the teaching of Dental Sculpture and Anatomy toundergraduate students of the Bauru School of Dentistry, University of Sao Paulo, through activities that would associate theory, practice and the development of manual skills.

Osterradionecrose dos maxilares

The osteoradionecrosis (ORN) during long was considered as hum type of osteomyelitis spent bone, being one of the major complications of radiotherapy head and neck. This complicate are presents despite advances in the treatment of cancer patients, Therefore, the objective of this work was to emphasize the main factors predisposing ORN, its clinical features and treatment through a literature review.

Pistas diretas para o tratamento de mordida cruzada posterior

The malocclusions are one focus of discussions in public health, due to which it is necessary to incorporate correction procedures that are inexpensive, easy to perform and which can be made in health services. Planas Direct Tracks meet such characteristics which make them advantageous for the crossbite correction. The aim of this study was to present a case in which correction of unilateral crossbite was performed with the resources available in a public clinic. This is a 6 year-old patient who presented functional unilateral crossbite in canines and posterior teeth. A cross decreased maxillary arch leading to a condition of unilateral posterior crossbite was detected. Occlusal adjustments were performed in canine and posterior teeth; however it was not enough to restore the occlusal balance. It was decided to prepare Planas Direct Tracks in canines, allowing functional balance, which prevented masticatory movement alteration during the growth phase and malocclusion correction. Controls were performed every six months to evaluate the patient's progress and whether or not new occlusal adjustments were necessary. Monitoring and treatment were conducted for 5 years, until stabilization of the permanent dentition ensuring treatment. It is concluded that Planas Direct Tracks were effective for the correction of unilateral posterior crossbite. So, it is essential to note that this procedure can be performed in public services.

Mordida cruzada posterior, correccion y consideraciones: caso clínico con 7 años de seguimiento

Early treatment of functional unilateral posterior crossbite during the mixed dentition is extremely important for contemporary Orthodontics, provides the correct positioning of osseous bases, teeth and temporomadibular joint when the stomatognathic system is in growth and development. These results generally develop into an adequate craniofacial relationship, reducing the necessity for more complex treatments at permanent dentition. The subject of this paper was to report patient 8 years old, diagnosed with functional unilateral posterior crossbite, and was treated by an expander appliance type Quad-helix emphasizing the long-term stability. The malocclusion was corrected in 3 months of active use of the appliance, 3 months for retention purposes and followed up during 7 years post-treatment. The stability in long term of functional unilateral posterior crossbite treated is closely related with early diagnostic, the elimination of the etiological factor associated with a correct appliance and the mechanic of treatment.

Estudio de las caracteristicas de oclusión de niños de 12 años del municipio de Cáceres, Mato Grosso, Brasil

The aim of this study was to evaluate the occlusal condition of 12 year-old children examined by the Oral Health Brazil 2003 Project in Cáceres city. The sample consisted of 170 children, boys and girls, selected at random among 20 schools that took part in this project. It was used for the analysis of the occlusal condition the Dental Aesthetic Index (DAI), as manual of basic epidemic rising in Oral Health extolled by the World Health Organization which describes the occlusal conditions in relation to dentition, space and occlusion of the permanent dentition. It was observed that the prevalence of the normal occlusion and of the malocclusion were, respectively, 21.18% and 78.82%. This last one was present due to the tooth crowding (74.93%), spacing in the incisor segment (23.88%), diastema (17.17%), anterior maxillary misalignment (58.95%) and anterior mandibular (61.19%), excessive overjet (11.94%), negative overjet (4.47%), open bite (1.5%) and molar relationship Class II or III (26.87%). It was concluded that the studied sample presents a high index of factors to compose the malocclusion.