Extraction of the deciduous canine as an interceptive treatment in children with palatally displaced canines - part II: possible predictors of success and cut-off points for a spontaneous eruption.

Aim: To analyse factors affecting the success rate of palatally displaced canines (PDCs) and eruption time and to find cut-off points to predict when interceptive extraction is beneficial versus unnecessary.

Materials And Methods: Sixty-seven patients, 40 girls, 27 boys (10-13 years) with uni- (45) or bilateral (22) PDCs, persisting deciduous canine and no previous orthodontic treatment were randomly allocated for extraction or non-extraction using the block randomization method. There were no dropped out after the randomization or during the trial.

Extraction of the deciduous canine as an interceptive treatment in children with palatal displaced canines - part I: shall we extract the deciduous canine or not?

Objectives: To analyse whether extraction of the deciduous canines facilitates eruption of the palatal displaced canines (PDCs), and to analyse root resorption in adjacent teeth caused by the PDCs.

Materials And Methods: Eligibility criteria for participants were as follows: children at age 10-13 years with either maxillary unilateral or bilateral PDC, persisting deciduous canine and no previous experience of orthodontic treatment. Sixty-seven patients (40 girls and 27 boys; age: mean ± standard deviation: 11.

Concomitant hypodontia and hyperodontia: an analysis of nine patients.

Introduction: Congenital absence of tooth germs and presence of supernumerary teeth (CHH) are anomalies which are classified as embryologically determined disorders. Both disorders can occur together (CHH), but relatively rarely.

Objective: The aim of the present study was to present and analyze nine cases collected during the past 24 years, where congenitally missing teeth occurred with supernumerary teeth in the same patient.

Pain, discomfort, and use of analgesics following the extraction of primary canines in children with palatally displaced canines.

BACKGROUND. Pain following the extraction of the primary canine in children with palatally displaced canines (PDC) as an interceptive treatment has not been investigated. AIMS.

A systematic review of the interceptive treatment of palatally displaced maxillary canines.

The aim of this study was to assess whether interceptive treatment in the mixed dentition prevents impaction of palatally displaced canines (PDC) by systematically reviewing the literature. A literature search of PubMed, the Cochrane Library electronic databases, and Scopus was performed covering the period from January 1966 to May 2009. The inclusion criteria were mixed dentition with unilateral or bilateral PDC, randomized controlled trials (RCT), prospective and retrospective studies with untreated controls, and clinical trials comparing at least two treatment strategies.

Rapid maxillary expansion effects on nocturnal enuresis in children: a follow-up study.

Objective: To assess the effects of 10-14 days of rapid maxillary expansion (RME) on nocturnal enuresis (NE) in children who have long-standing resistance to medical therapy and to evaluate the long-term success rate after 10 years.

Materials And Methods: Twenty-three children with NE, aged 6-15 years old (mean age = 10), who wet their bed almost every night and had never been dry were referred from pediatric specialists. Mean RME was 6.

Location, complications and treatment of mesiodentes--a retrospective study in children.

Out of approximately 11 500 children, who had been referred to the Department of Paediatric Dentistry at the Institute for Postgraduate Education,Jönköping, Sweden, 97 individuals had a total of 123 mesiodentes. Their dental records and radiographs were analysed in order to study the clinical and radiographic features of the mesiodentes, to record the complications caused by them and to evaluate different forms of treatment. In the present study, the predominant location of the mesiodentes was palatally with 39 per cent in an inverted position.

Attitudes and satisfaction with dental appearance in young adults with and without malocclusion.

The aim of the study was to assess the quality of a Public Dental Service (PDS) system in Sweden with regard to the orthodontic care and to investigate the selection made for the consultation by the general practitioners (GPs) and by orthodontists of those patients with malocclusion. In the individuals leaving the PDS system, the residual need and demand for treatment due to malocclusions and satisfaction with and opinion of their teeth was assessed in orthodontically treated and untreated 19-year-olds. Altogether 121 19-year-olds were clinically investigated with respect to six defined malocclusion traits and given a questionnaire.

Outcome of orthodontic care in 19-year-olds attending the Public Dental Service in Sweden: residual need and demand for treatment.

The study analyses residual need and demand for orthodontic treatment in 19-year-olds attending the Swedish Public Dental Service (PDS). The general practitioners (GPs) had selected individuals for orthodontic specialist consultation and some were treated by GPs or specialists or not considered to be in need for treatment. Altogether 164 individuals were called for clinical investigation at the age of 19 years and also given a questionnaire asking for residual orthodontic treatment demand and satisfaction with information and orthodontic care.

Long-term results of orthodontic treatment of impacted maxillary canines.

A total of 61 children who had 83 maxillary canines impacted were followed up for a mean of 3.5 years (range 1.1-10.

A critical view of treatment priority indices in orthodontics.

Indices for orthodontic treatment prioritization are usually based on morphological and sometimes functional deviations from a concept of an ideal occlusion. However, such morphological variation from a constructed norm only reflects normal biological variation and should never serve as a basis for treatment decisions. Evaluation of treatment need must instead be based on consequences of malocclusion for the subject.

To what extent do deviations from an ideal occlusion constitute a health risk?

Selection of patients for orthodontic treatment should be based on a thorough analysis of the consequences of malocclusions for the individual. The mere presence of deviations from the concept of the ideal occlusion should have no influence on orthodontic treatment decisions. According to available studies, the influence of malocclusion on periodontal health, speech and chewing is fairly minor.

Orthodontic treatment standards in a public group practice in Sweden.

The aim was to assess the orthodontic treatment service provided by 6 orthodontists in a group practice in Malmö. One hundred cases were randomly selected from the model store. The Index of Complexity, Outcome and Need (ICON) was used to assess the need, complexity of the problem, outcome, the degree of improvement and whether the completed case was acceptable or not.

Eruption disturbances of mandibular permanent canines in Japanese children.

Objectives: The purpose of this study was to clarify the cause and prognosis of eruption disturbance of mandibular permanent canines.

Sample And Methods: Fifteen Japanese children who visited Niigata University Dental Hospital between 1979 and 1997 with unerupted and/or impacted mandibular permanent canines were examined.

Results: All cases showed unilateral disturbances.

Root resorption after orthodontic treatment in high- and low-risk patients: analysis of allergy as a possible predisposing factor.

The development of excessive root resorption during orthodontic tooth movement is an adverse side-effect, which is of great concern. The aim of this investigation was to analyse factors that might be associated with orthodontically induced root resorption. After buccal movement of maxillary premolars in 96 adolescents, the experimental teeth were extracted and subjected to histological analysis and measurement of resorbed root area.

Incisor root resorptions due to ectopic maxillary canines imaged by computerized tomography: a comparative study in extracted teeth.

The purpose of the study was to analyze the ability of computerized tomography (CT) scanning to discriminate maxillary incisor root resorptions caused by ectopically erupting canines. Seventeen maxillary incisors were radiographed in vivo by CT scanning. Contiguous transverse CT scans with a slice thickness of 2 mm were exposed perpendicular to the long axis of the lateral incisors and through the crown of the adjacent, ectopically positioned maxillary canine.

Signs of temporomandibular disorders in girls receiving orthodontic treatment. A prospective and longitudinal comparison with untreated Class II malocclusions and normal occlusion subjects.

The aim of this investigation was to prospectively and longitudinally study signs of temporomandibular disorders (TMD) and occlusal changes in girls with Class II malocclusion receiving orthodontic treatment and to compare them with subjects with untreated Class II malocclusions and with normal occlusion subjects. Three groups of age-matched adolescent girls were examined for clinical signs of TMD and re-examined 2 years later. Sixty-five Class II subjects received orthodontic fixed straight-wire appliance treatment (Orthodontic group), 58 subjects were orthodontically untreated (Class II group), and 60 subjects had a normal occlusion (Normal group).

Symptoms and signs of temporomandibular disorders before, during and after orthodontic treatment.

The relationship between orthodontic treatment and symptoms and signs of temporomandibular disorders (TMD) was studied prospectively and longitudinally in 65 adolescent girls with Class II malocclusion. The subjects received orthodontic fixed appliance treatment with the straight-wire technique combined with or without extractions and were examined for symptoms and signs of TMD before, during, after, and finally one year post-treatment. Both symptoms and signs of TMD showed considerable fluctuations over the three-year period within the individuals.

The early reparative process of orthodontically induced root resorption in adolescents--location and type of tissue.

The aim of this investigation was to determine the pattern of repair of root resorption regarding the location and type of tissue in adolescents after application of a well-controlled force magnitude. In 16 adolescents (mean age 13.8 years), the maxillary first premolars were buccally moved with a weekly reactivated force of 50 cN (approximately 50 g) for 6 weeks following which the appliance was made passive for 2, 3, 6, and 7 weeks.

Long-term effects of orthodontic magnets on human buccal mucosa--a clinical, histological and immunohistochemical study.

The aim of this intra-individual study was to examine human buccal mucosa clinically, histologically and immunohistochemically after 9 months' exposure to orthodontic magnets. In each of eight subjects (17.8-42.

Class II correction with magnets and superelastic coils followed by straight-wire mechanotherapy. Occlusal changes during and after dental therapy.

The investigation comprised 18 consecutively selected patients, mean age 14.7 years at the start of treatment, with Class II malocclusion, deep overbite and space deficiency in the maxillary arch. The first phase of the treatment consisted of 6 months simultaneous distal movement of maxillary first and second molars with repelling samarium-cobalt magnets on one side and a superelastic nickel-titanium coil on the contralateral side together with an anterior biteplane to achieve bite opening.

Hyalinization and root resorption during early orthodontic tooth movement in adolescents.

The aim of this investigation was to study the hyalinization of the periodontal ligament with time and its relationship to root surface resorption after the application of an orthodontic force, reactivated weekly, of 50 cN (approximately 50 g). Fifty-six patients (18 boys and 38 girls, mean age 13.8 years) were divided into 7 groups of 8.