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At least 325 records · Page 18Linked to original sources
PubMed2005

Two-stage treatment of skeletal Class III malocclusion during the early permanent dentition.

A patient with skeletal Class III malocclusion was treated in 2 phases during the early permanent dentition. In phase 1, maxillary protraction was combined with rapid palatal expansion; in phase 2, fixed appliances were placed. The results were good posttreatment, and, 1 year later, a favorable growth tendency could be observed. This report shows that treatment for a patient with skeletal Class III malocclusion can be started in the early permanent dentition, with very good final results.

Age Factors↗
PubMed2005

Biting efficiency in relation to incisal angulation.

Previous studies suggest the orientation of the incisor teeth to the path of jaw movement pronouncedly affects their efficiency of action. To test this hypothesis, upper and lower incisal portions of a study model with ideal Asian occlusion were mounted on a mechanical tester and impressed into rectangular blocks made of 15.3% w/w starch gels or Cheddar cheese. At varying angulations of attack between the long axis of the teeth (defining the orientation of the tooth crown) and force direction, the teeth were driven into the blocks for 4-6mm until fractures had grown in the foods. Both the angle of attack and the work divided by fractured area produced in the food, termed 'work to fracture', were measured. The food type (cheese or gel), incisal type (upper or lower pair) and angle of inclination were significant effects on the works to fracture. The minimal work was for angles slightly proclined to the vertical, although only angles of proclination >40 degrees were significantly higher than all other angles. Retroclination or large angles of proclination made little difference to the work done, but produced markedly off-axis cracks. It is suggested that human incisors act most efficiently at small gapes and that orthodontic corrections will thus offer definite functional benefits.

Cheese↗
PubMed2000

Facial growth and management of orthodontic problems.

This article enables pediatricians to identify and understand the implications of common facial growth problems in children and adolescents. Problems with facial growth can result in aesthetic and functional concerns. Using a simple method of clinical evaluation, pediatricians can identify facial growth problems in the anteroposterior, vertical, and transverse dimensions. These problems can then be referred for evaluation and treatment by various means. Because facial growth is the result of the interaction of genetic and environmental factors (some of which are functional), growth modification may be a possibility. Some problems may be camouflaged or treated by combined surgical and orthodontic means. Continued growth in early adulthood may enhance or detract from treatment results obtained in childhood or adolescence. These dynamic properties of the face make management of facial growth challenging but generally rewarding and successful because of substantial aesthetic and functional improvements.

Adolescent↗
PubMed1985

Maxillary expansion: a surgical technique based on surgical-orthodontic treatment objectives and anatomical considerations.

Maxillary transverse expansion is usually done as an ancillary, not primary surgical movement in the surgical-orthodontic correction of dentofacial deformities. A maxillary osteotomy technique is described which permits combinations of movements, including expansion. Releasing the palatal soft tissue to disperse the resulting soft tissue tension, bone grafting and adequate stabilization and retention of the segments are stressed to achieve success. Also described is the use of local bone grafts and the rotation of soft tissues to cover surgical defects. Results are encouraging and the complication rate has been low in this series of 104 patients.

Adolescent↗
PubMed1999

Eruption disturbances of the first and second permanent molars: results of treatment in 43 cases.

Impaction or retention of first and second permanent molars is an uncommon condition with diverse therapeutic approaches. To ascertain the success rate of different treatment possibilities, a retrospective study was made of 25 patients with a total of 43 permanent molars with eruption disturbances. In most cases, the nonerupted teeth were mandibular second molars (65%), followed by maxillary second molars (21%). Their position, degree of impaction (inclusion), clinical features, repercussion on the neighboring teeth, type of treatment, and outcome were evaluated. Infraocclusion was often associated with malposition of neighboring teeth, as well as extrusion and infraocclusion of opposing teeth. Due mostly to a delay in the diagnosis of the condition, an acceptable final position of the nonerupted molar was obtained in only 8 of 13 conservatively treated second molars. In order to prevent this situation, radiographic examination (ideally during the early mixed dentition period) and early diagnosis of eruption disturbances of permanent first and second molars are recommended, particularly when considering that these anomalies are associated with a high rate of occlusal disturbances that may require orthodontic correction.

Adolescent↗
PubMed1999

Class II malocclusion correction: an American board of orthodontics case.

A Class II open bite malocclusion with a narrowed maxilla, an increased lower anterior facial height, and a tooth size discrepancy are presented. The malocclusion was treated nonextraction in 2 phases. The mixed dentition phase of treatment was maxillary molar uprighting followed by a bonded rapid palatal expander. The vertical dimension was managed with a vertical pull chincup. The full appliance phase included buildups of the maxillary lateral incisors and mechanics to control lower incisor position.

Cephalometry↗
PubMed1995

Leeway space and the resolution of crowding in the mixed dentition.

The leeway space provides adequate space to resolve crowding that is present in the mixed dentition in the majority of individuals. This space can be maintained by preserving arch length with a lingual arch as the primary teeth begin to exfoliate, unless conditions such as the premature loss of a primary canine require earlier intervention. A lip bumper can also be inserted after the eruption of the first premolars to preserve arch length.

Child↗
PubMed2002

Appropriateness of orthodontic referrals: self-perceived and normative treatment needs of patients referred for orthodontic consultation.

OBJECTIVES: The aims of this prospective study were to evaluate the self-perceived and normative orthodontic treatment needs of children referred for orthodontic consultation and to determine the proportion of children who were inappropriately referred. METHODS: The sample consisted of 257 children with a mean age of 12.0 years (SD = 2.4). An orthodontist assessed the children's normative treatment need using the dental health component (DHC) of the index of orthodontic treatment need (IOTN), and for patients in the mixed dentition the need for interceptive treatment was assessed. Questionnaires were answered by both the child and the parent to assess satisfaction with dental appearance and desire for treatment. RESULTS: The distribution of the IOTN grades showed that 73% of the children had definite need while 27% had borderline/no need for orthodontic treatment. Twenty-six per cent of children and 17% of parents did not express orthodontic concern, even though more than half of these children were in definite need of treatment as assessed by IOTN. The children's orthodontic concern was significantly related to the DHC scores. Out of the 103 children who were in the mixed dentition, only about 16% required interceptive treatment. CONCLUSIONS: The results indicated that a significant number of children were inappropriately referred for orthodontic treatment. Referring dentists need to assess the normative treatment needs of the children as well as the children's and parents' commitment and desire for orthodontic treatment before deciding on the need for referral.

Child↗
PubMed2000

Do we really want a quick fix?

Dental practitioners have been encouraged recently to take a more structured long term view of their continuing professional development, in particular being wary of any 'weekend' courses apparently offering 'quick fix' solutions to their clinical problems.

Adolescent↗