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At least 811 records · Page 45Linked to original sources
PubMed2006

Dentoalveolar and skeletal changes associated with the pendulum appliance followed by fixed orthodontic treatment.

INTRODUCTION: This prospective clinical study analyzed the distalization of maxillary molars achieved by the pendulum appliance and its effect on the anchorage teeth during and after fixed orthodontic treatment. METHODS: Lateral cephalograms of 22 adolescents (15 girls, 7 boys) taken pretreatment, after distalization, after leveling and aligning, and after fixed orthodontic treatment were evaluated. The initial mean age was 14.5 years (SD = 1.80). The mean time for distalization of the maxillary molars was 5.85 months (SD = 1.82), and the total treatment time was 3.61 years (SD = 1.83). RESULTS: The pendulum appliance moved the maxillary molars distally, but with significant distal inclination, protrusion of the anterior teeth, and increase in lower anterior facial height (LAFH) due to the clockwise mandibular rotation. After fixed orthodontic treatment, the maxillary incisors and the maxillary first premolars and first molars were returned to their pretreatment anteroposterior positions. Thus, at postdistalization, there was 2.1 mm of protrusion of the maxillary first molars, despite the anchorage reinforcement (Nance button and cervical headgear worn at night during fixed appliance therapy). However, at the end of treatment, all patients had Class I molar relationships. CONCLUSIONS: The pendulum appliance followed by fixed orthodontic treatment corrected the Class II sagittal relationship, especially due to the dentoalveolar changes secondary to the spontaneous mandibular growth in the anterior direction during fixed appliance treatment.

Adolescent↗
PubMed1996

Alternative nonsurgical strategies to treat complex orthodontic problems.

Patients whose vertical discrepancies are best corrected with both orthodontics and surgery can be placed into two distinct categories. The first category is the group of patients who have short posterior facial heights in conjunction with excessive anterior facial heights. The second category is the group of patients who have the opposite problem, i.e., excessive posterior facial heights and decreased anterior facial heights. Both of these types of malocclusions can best be treated with a combination of orthodontics and surgery. Alternative treatment for these "outer limits" patients require a thorough differential diagnosis, selection of appropriate force systems, and an understanding that nonsurgical treatment will result in compromises. Although these compromises must be accepted these patients can expect treatment results that are esthetically pleasing, highly acceptable for the teeth and supporting tissues, functional, and reasonably stable if a careful differential diagnosis is followed with treatment that uses precise space management with sequential directional force application.

Adolescent↗
PubMed1999

Management of pseudo Class III malocclusion in southern Chinese children.

AIM: To illustrate a simple effective method for early treatment of pseudo Class III in the mixed dentition and to highlight the advantages of early treatment by showing a 4-year follow-up of the treatment effects. SUBJECTS: Twenty-one consecutive southern Chinese patients with a mean age of 9.6 years were included in the early treated group with pseudo Class III malocclusion. METHODS: Lateral cephalometric films taken at the beginning and at the end of treatment were analysed. The arithmetic mean and standard deviation (SD) were calculated for each cephalometric variable and paired t-tests were performed to assess the statistical significance of the treatment effects. RESULTS: Anterior crossbites and mandibular displacements were eliminated after the treatment. The angulation of the upper incisors to the maxillary plane showed an increase by a mean of 9.5 degrees (P < 0.001), while the angulation of the lower incisors to the mandibular plane showed a decrease by a mean of 4.9 degrees (P < 0.001). CONCLUSION: In pseudo Class III malocclusion, proclination of upper incisors and/or retroclination of lower incisors with simple fixed appliances contribute to the correction of anterior crossbite and the elimination of mandibular displacement. Proclination of upper incisors, use of Leeway space and arch width increase provide space required for the eruption of the premolars and canines.

Bicuspid↗
PubMed1997

[Early functional surgery as a component of interceptive treatment of developing dysmorphosis in adolescents].

A discordance in the shape and relation between dental arches may be corrected by functional orthopaedics. Discovered in the adolescence, the dysgnathia has yet run its course and it remains just a bit of growth power, this situation justifies to recourse to interceptive surgery, meant for facilitation of oral reeducation and thus harmonisation of residual facial growth. This "functional surgery" is composed of tongue myoplasty, functional genioplasty and the early corrective orthopaedic surgery which is defined by its association with immediate reeducation. It is characterized by its benignity and stability of its results if occlusal and functional surroundings are equilibrated. Moreover, its profits by residual growth power which became well guided, and assures improvement of immediate postoperative results, if needed.

Adolescent↗
PubMed1994

Class II malocclusion in mixed dentition.

The primary goal of early treatment is to correct the existing muscular, skeletal and dental imbalances before the eruption of the permanent teeth. When early treatment is instituted, 80% of the malocclusion can be treated with orthopedic appliances and the remaining 20% solved with the straight wire appliances. This approach ensures that in excess of 95% of the cases can be treated non-extraction and non-surgically.

Child↗
PubMed1993

A growth control approach to Class II, Division 1 cases during puberty involving the simultaneous application of maxillary growth restriction and mandibular forward induction.

A simple method that used headgear and a functional appliance simultaneously was used for the correction of Class II, Division 1 cases with severe denture base discrepancy. The treatment restricted the forward growth of the maxilla and advanced the mandible. The functional appliance, referred to as the mandibular growth advancer (MGA), advances the mandible progressively with a splint, with the objective of remodeling the condyle and the glenoid fossa in the temporomandibular joint. Functional adaptation was achieved as the muscles that are attached to the mandible adjusted to new positions. In the two cases that illustrate this method, the ANB angle decreased and the Ar-B distance increased over a short period to four and six times the mean Japanese growth rate, respectively. After the correction of the denture-base discrepancy, a multibracket fixed appliance was used for dental alignment, and good skeletal, occlusal relationships and profiles were obtained. Treatment of severe denture-base discrepancy in this manner may reduce the skeletal abnormality, decrease the number of extraction cases, and shorten the subsequent multibracket treatment time. And it may reduce the iatrogenic side effects caused by prolonged mechanotherapy with a fixed appliance.

Acrylic Resins↗
PubMed2006

[Prevention and treatment of dento-maxillary discrepancy].

The many clinical and radiological signs of arch length discrepancy simplify the practitioner's task of diagnosing it early. When they need to deal with insufficient room in the dental arch, orthodontists have available to them a large variety of therapeutic possibilities that require relatively little cooperation from young patients and that often work quickly to correct beginning malocclusions in the mixed dentition or that prevent them from worsening. Orthodontists decide whether to use space maintainers, increase arch length, or embark on a program of serial extraction depending upon the type of disorder, its severity, and its etiology. The principle objectives of early treatment in arch length discrepancy cases are to re-establish a balanced occlusion and to reduce the duration and the complexity of definitive treatment in the adult dentition.

Cephalometry↗
PubMed1997

The mechanism of Class II correction in late Herbst treatment.

The aim of this study was to analyze quantitatively the sagittal skeletal and dental changes contributing to Class II correction in patients treated with the Herbst appliance after the pubertal growth peak. The sample consisted of 21 subjects with a Class II, Division 1 malocclusion treated during the skeletal maturity stages MP3-H and -1, corresponding to a period after the maximum of pubertal growth (late treatment). A comparison was made with 22 Herbst subjects treated during the skeletal maturity stages MP3-E and -F, corresponding to a period before the maximum of pubertal growth (early treatment). Lateral head films from before and after Herbst therapy were analyzed, according to the method of Pancherz. As a result of the Herbst therapy, all patients attained a Class I or overcorrected Class I occlusal relationship. Class II molar correction averaging 6.1 mm was due to 37% skeletal and 63% dental changes. Overjet correction averaging 8.4 mm was due to 27% skeletal and 73% dental changes. Differences between the late and the early treated patients were only found for the dental changes. The upper anterior teeth were retroclined and the lower anterior teeth were proclined more in the late cases. The conclusion of the study was that the Herbst appliance is equally efficient in patients treated before and after the pubertal peak of growth. However, proclination of the lower incisors (anchorage loss) in late treated subjects is larger than in early treated subjects. This should be considered in treatment planning.

Adolescent↗
PubMed1991

[Use of temporary crowns for corrections of malocclusions during the deciduous dentition in children with cleft lips and palates].

Diagnosis and correction of the a priori not normal development of the dentition in cleft palate children is of utmost importance in the primary dentition. Secondary preventive dental care using uncomplicated procedures is one of the most rewarding responsibilities in cleft orthopedics. Aesthetics in dentistry is stressed and cleft palate children should not be excluded out of consideration for their parents. A technical modification of the inclined plane using only tooth coloured materials for the treatment of sagittal and transverse anomalies of the primary dentition is presented. Case reports include a patient with a genetic disposition for anomalies in the ipsilateral maxillary quadrant.

Child, Preschool↗
PubMed1975

[Methodological characteristics of restorative surgery and orthodontic treatment in the correction of extensive defects of the tissues in the oral region and the anterior portion of the mandible].

In the paper, technical and tactical features while using reconstructive surgery and orthopedic therapy for liquidation of vast tissue defects in the adoral region and anterior mandibular portion are discussed. The importance of planning plastic operative procedures with optimum utilization of local tissues, especially in labioplasty, is substantiated, and some definite recommendations on using the pedicled graft tissue are given. A sequence of stages in replacement of soft tissues is described, as well as some features of elimination of the anterior mandibular defect by the iliac bone graft. It is for the first time that the importance of joint efforts of surgical and orthopedic specialists for providing a large scale complex therapy is emphasized, that may contribute to favourable anatomical, cosmetic and functional results in liquidation of vast tissue defects of the adoral region and anterior mandible.

Adult↗
PubMedDate not supplied

[Hawley appliance and its clinical use].

The authors presented considerations on the Hawley appliance, describing its main characteristics and modifications. It is also showed the advantages of its use, as well as its main indications: a) slight tooth inclinations and rotations; b) extrusion of posterior teeth; c) space maintener and d) as retention after orthodontic treatment.

Child↗