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At least 253 records · Page 14Linked to original sources
PubMed2006

Correction of a mandibular lateral incisor-canine transposition.

Early diagnosis of a transposition can simplify the orthodontic correction. In this report, we describe the orthodontic management of a patient with mandibular right lateral incisor and canine transposition. Nonextraction therapy was performed with removable multibracket appliances. Natural tooth order was attained, and a symmetric and functional Class I occlusion was achieved.

Child↗
PubMed1989

An American Board of Orthodontics case report. Correction of a severe Class II malocclusion.

Many factors often combine to create a malocclusion. Broadly these include the genetic potential of the individual and environmental or local factors. Class II, Division 1 malocclusions may result from both inherited skeletal and dental patterns and an additional environmental factor such as thumb sucking or some other habit. Successful treatment of patients with this type of malocclusion requires both an orthodontic correction of the existing dental and skeletal problems and also control of any deleterious habit. The following case report deals with a patient who had such a malocclusion.

Adolescent↗
PubMedDate not supplied

Orthodontic management of mandibular lateral incisor-canine transpositions: reports of cases.

This article presents different treatment aspects in three mandibular lateral incisor-canine transposition cases. The early identification of transposed teeth simplifies orthodontic correction. Incomplete transposition cases can be managed successfully by interceptive orthodontic treatment. If complete transposition occurs, two treatment alternatives may be possible: Extraction of the transposed tooth or keep the teeth in their transposed positions.

Child↗
PubMed1991

The skeletodental adaptations in deep bite correction.

The purpose of this study was to analyze the skeletal and dental changes produced by orthodontic correction of a deep bite. A comparison was made between the adolescents' and the adults' responses in an attempt to observe any differences that accounted for increased stability in a growing patient. Records on 30 patients were analyzed before and after treatment. These patients were divided into two equal groups on the basis of their stage of maturational development. The group of "growers" had an average age of 12.2 years, and the group of "nongrowers" averaged 26.7 years in age. All represented nonextraction cases with an excessive overbite before treatment. Deep bite was corrected by leveling with conventional continuous arch wires. Cervical headgear, Class II, or vertical elastics were used when indicated. On the average, the molars were extruded 4.7 mm in the grower's group. However, the mandibular plane angles did not change during treatment. This finding can be attributed to the greater amount of posterior mandibular development that was observed in growing patients. Even with minimal extrusion of the molars (1.3 mm on average), the adults did not maintain the original mandibular plane angle.

Adaptation, Physiological↗
PubMed2001

Influence of patient age and sex on orthodontic treatment: evaluations of Begg lightwire, standard edgewise, and straightwire techniques.

The nature of the planned orthodontic correction--primarily skeletal or dental--ought to be influenced by the age and the sex of the patient. Jaw growth should contribute more in younger adolescents and faster-growing boys, and the correction should be primarily dental in patients with little growth potential. Influences of age and sex were studied in 154 Class II Division 1 young people between 10 and 18 years of age at the start of treatment. Variations among 3 orthodontic techniques, Begg lightwire, standard edgewise, and straightwire, were also examined. The Johnston method of cephalometric analysis was used to partition changes into their skeletal and dental components. Analysis of covariance was used to identify changes because of patient age, patient sex, and treatment technique. Technique differences were localized to 2 areas: (1) less root torquing in the Begg group that left the maxillary incisors more upright than in the other groups and (2) more mesial molar crown tipping in the straightwire group because of using preangulated brackets. The patient's age had the greatest influences on (1) translation and mesial crown tipping of the molars (both changes were larger in younger patients) and (2) mandibular growth, which was greatest in younger patients and declined linearly with age. Forward movement of the maxillary molars was greatest in young patients, but this was exceeded at all ages by mesial translation of the lower molars, thus providing a net improvement in molar relationship. Linear growth was greater in males for all facial dimensions, but the sex difference of consequence was the large forward growth of the mandible that contributed significantly to the sagittal correction in boys but not in girls. One would not expect the effects of age and sex to be large because there is so much individual variation in the malocclusions and tempos of growth. Still, the present study shows that these factors produce readily measurable and systematic influences on the nature of the skeletodental correction.

Adolescent↗
PubMed1991

[Orthodontic-surgical treatment for correction of maxillary deficiency. LeFort I osteotomy].

Class III dentofacial deformities have been corrected by isolated orthodontic and/or surgical procedures, the facial a esthetics results of this approach are frequently less than optimal. The purpose of this article is to present our orthodontic-surgical approach, which has proved successful functional and esthetic results. Two representative cases are illustrated.

Adult↗
PubMed1998

Uprighting mesially impacted mandibular permanent second molars.

Impaction of permanent teeth is a relatively common occurrence and can involve any tooth in the dental arch. Impacted mandibular second molars are relatively rare, but when they occur they may present a clinical problem for the orthodontist and oral surgeon. A typical case of bilaterally impacted mandibular second molars is illustrated, with orthodontic and surgical treatment options presented. Emphasis is placed on early diagnosis and initiation of corrective orthodontic therapy.

Child↗
PubMed2005

Lactate dehydrogenase activity in human gingival crevicular fluid during orthodontic treatment: a controlled, short-term longitudinal study.

BACKGROUND: During orthodontic tooth movement, the early response of periodontal tissues to mechanical stress is an acute inflammatory one. This study uses a longitudinal design to examine lactate dehydrogenase (LDH) activity in gingival crevicular fluid (GCF) to determine if GCF LDH can be used as a diagnostic aid in monitoring tooth movement and tissue response during orthodontic treatment. METHODS: Seventeen patients (mean age: 16.1 years) participated in the study. Each patient was undergoing treatment for distal movement, and an upper first molar served as the test tooth (TT), while the contralateral (CT) and antagonist (AT) teeth were used as controls. The CT was included in the orthodontic appliance, but was not subjected to the distal movement; the AT was free from any orthodontic appliance. The GCF around the experimental teeth was harvested from both mesial and distal tooth sites immediately before appliance activation, and on days 7, 14, and 21. Clinical gingival conditions were also recorded. RESULTS: Gingival crevicular fluid LDH activity was significantly elevated in all sites of the TT and CT, as compared to the AT, where LDH activity remained at the baseline level throughout the study. Enzyme activity levels were also greater in the TT than in the CT, and in the compression sites. CONCLUSIONS: Our results suggest that GCF LDH levels reflect the biological activity that takes place in the periodontium during orthodontic movement, and therefore they can be used as a diagnostic tool for monitoring for correct orthodontic tooth movement in clinical practice.

Adolescent↗