Streptococcus mutans counts in plaque adjacent to orthodontic brackets bonded with resin-modified glass ionomer cement or resin-based composite.

This study investigated the number of Streptococcus mutans CFU (colony forming units) in the saliva and plaque adjacent to orthodontic brackets bonded with a glass ionomer cement--GIC (Fuji Ortho) or a resin-based composite--RC (Concise). Twenty male and female patients, aged 12 to 20 years, participated in the study. Saliva was collected before and after placement of appliances.

Anticariogenic effect of fluoride-releasing elastomers in orthodontic patients.

This in vivo experimental study evaluated the efficacy of fluoride-releasing elastomers in the control of Streptococcus mutans levels in the oral cavity. Forty orthodontic patients were recruited and divided into two groups of 20. Fluoride-releasing elastomeric ligature ties (Fluor-I-Ties, Ortho Arch Co.

Effect of rapid maxillary expansion on the dimension of the nasal cavity and on nasal air resistance.

Introduction: Atresia of the maxilla is a transverse skeletal dysplasia, possibly associated with respiratory problems. For its correction, rapid maxillary expansion is a feasible orthodontic process.

Objective: To evaluate the effect of rapid maxillary expansion on the nasal cavity by acoustic rhinometry and computed rhinomanometry.

Effect of 0.4% stannous fluoride gel on Streptococci mutans in relation to elastomeric rings and steel ligatures in orthodontic patients.

Background: Patients with fixed orthodontic appliances often experience an absolute increase in the number of Streptococci mutans colony-forming units (cfu). The aim of this investigation was to study the development of biofilm and S. mutans cfu in connection with stainless steel ligatures and elastomeric rings in orthodontic patients treated with and without 0.

[The relationship between oral habits, oronasopharyngeal alterations, and malocclusion in preschool children in Vitória, Espírito Santo, Brazil].

The objective of this study was to estimate the prevalence of malocclusion and associated variables such as deleterious habits (DH) and oronasopharyngeal alterations (OA), mouth breathing, atypical phonation, and atypical swallowing in three-year-old children in Vitória, Espírito Santo State, Brazil. The sample included 291 children of both sexes enrolled in a Children's Educational Center and selected through probability sampling by conglomerates. Logistic regression indicated a high relative risk (RR) in children with altered overjet, open bite, and cross-bite to present mouth breathing (RR = 1.

Muscular, functional and orthodontic changes in pre school children with enlarged adenoids and tonsils.

Introduction: Hypertrophy of the adenoids and palatine tonsils is the second most frequent cause of upper respiratory obstruction and, consequently, mouth breathing in children. Prolonged mouth breathing leads to muscular and postural alterations which, in turn, cause dentoskeletal changes.

Objective: The aim of this study was to determine muscular, functional and dentoskeletal alterations in children aged 3-6 years.