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At least 1,099 records · Page 61Linked to original sources
PubMed1994

Clinical ramifications of posterior and anterior facial height changes between treated and untreated Class II samples.

Some clinicians have suggested that one primary difference between successful and unsuccessful Class II treatment outcomes is the relative change of anterior and posterior facial heights. Successfully treated cases are claimed to exhibit greater increases in posterior facial height (PFH, articulare to gonion) than in the anterior facial height (AFH, menton to palatal plane). This conjecture was tested here by recalling a treated Class I sample and a treated Class II sample and by comparing the differences found in these samples to an untreated Class II sample at the same ages. The PFH/AFH ratio increased significantly more in the treated Class I and Class II samples during the active phase of treatment than in the untreated Class II sample at the same ages. During the years from posttreatment to recall (mean = 6 yrs), there was a significant increase in the PFH/AFH ratio in the treated Class II sample due to a greater increase in PFH than AFH. This ratio continued to improve after all appliance therapy had been discontinued, and it did not occur in the treated Class I sample nor in the untreated Class II sample. The conclusion was that the patient with a Class II malocclusion, if treated, continues to change favorably over time. This favorable change, in turn, helps maintain the Class II correction.

Adolescent↗
PubMed1999

Arch width and form: a review.

A study of the literature reveals a variety of opinions on the potential for change in arch dimensions. The variations in sample sizes, treatment mechanics, and retention regimens may obscure relevant findings. These articles confirm some common findings, and a number of clinical cases are presented to illustrate these trends. It would seem that limited degrees of arch expansion can be produced regularly, but careful case selection is necessary. Arch expansion is most likely to be achieved in the growing patient with correction of crossbites, correction of a Class II malocclusion, and achievement of a good intercuspation without extractions.

Dental Arch↗
PubMed1977

[Surgical correction of deep bite for the prevention of periodontal damage].

The operative corrections used up to now which were limited to the displacement of the maxillary frontal fragments of the alveolar process, only bring about a partial correction of the deep bite. For this reason additional operative methods on the mandible are recommended, which vary according to the bite. When the bite is neutral the fragment of the lower alveolar process should be placed deeper and should be tilted forward. On the other hand in distal bite cases the recommended procedure is, after dealing with the upper front according to maxillo-facial principles, to correct the mandibular retrusion and deep bite by deepening and advancing the lower alveolar process.

Esthetics, Dental↗
PubMed2001

Patient satisfaction following orthognathic surgical correction of skeletal Class III malocclusion.

The objectives of this study were to evaluate the relationship between preoperative psychologic status and attitude and postsurgical adjustment and experience of the surgical treatment. Questionnaires were sent to 140 consecutive Chinese patients with skeletal Class III malocclusion who had been treated with a combined orthodontic-surgical approach. The results showed the following: (1) immediately after the surgery 44% of patients had more pain, 57% had more numbness, and 73% had more swelling than expected; (2) most patients underwent noted marked changes in facial appearance (96%) and dental appearance (91%); (3) chewing ability improved in 71% of patients; (4) half of those with temporomandibular joint problems preoperatively experienced improvement; (5) personality and lifestyle were affected positively in about 50% of patients; (6) satisfaction with the treatment increased with time: 87% at 6 months and 92% at 24 months; and (7) a few patients (8%) regretted having undergone surgery, mainly because facial changes were not apparent. The vast majority of the present Chinese skeletal Class III patients were satisfied with the overall outcome of the continued orthodontic-surgical treatment.

Attitude to Health↗
PubMed2000

Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II Division 1 malocclusion.

This prospective cephalometric study was undertaken to assess the mode and magnitude of Class II correction with nonextraction Begg mechanotherapy in growing children. The sample comprised subjects with similar malocclusion and age range (9-12 years) who were specifically selected for nonextraction Begg mechanotherapy. Cephalograms were analyzed to assess the skeletal, dental, and soft tissue changes that occurred after correction of the molar relationship, the overjet, and the overbite during the 9-month treatment period. The results revealed a significant improvement in the anteroposterior jaw relationship, suggested by the significant reduction in the ANB angle (1.62 degrees ) and in Wits AO-BO (1.42 mm). The mandibular length increase of 0.56 mm suggests that the Class II elastics used in nonextraction Begg mechanotherapy had a minimal stimulatory effect on mandibular growth. There was a significant increase in the anterior and posterior facial heights and the ramal height. Almost all of the dental changes were significant. The most striking feature were a significant retraction and extrusion of the maxillary incisors and proclination and intrusion of the lower incisors accompanied by extrusion of the mandibular molars. The maxillary incisors extruded by 1.64 mm under the influence of the undesirable downward component of the Class II elastic forces. The major contribution to overjet and molar correction was predominantly dentoalveolar.

Cephalometry↗
PubMed1990

Some considerations about maintenance of the mandibular position for adult patient with TMJ disorder.

The patient was twenty-three year old female with TMJ disorder and crowding. She had often had a clicking sound caused probably by malocclusion since she was eighteen years of age. Limitation of mouth opening with TMJ locking has been occurring since she had an impacted right lower third molar extracted at nineteen. A stabilization splint was applied for better mandibular position to rectify the TMJ disorder. The clinical symptom was relieved one month later, so the malocclusion was treated with a multi-bracket appliance. Since cross bite in [formula: see text] was corrected in a year and three months, symptoms of the TMJ disorder disappeared and this condition has remained stable for the past year. A stabilization retainer worn at night was considered necessary to prevent a relapse of the dentition and mandibular position, and to keep the masticatory muscles relaxed. For the purpose of stabilizing the TMJ condition and occlusion, the patient was taught unilateral mastication in order to diminish the difference between sides in chewing force, because only one side had been habitually used for a long time. It is suggested that such an alternative chewing habit will improve functional stability following the structural correction.

Adult↗
PubMed1990

Mandibular first premolar teeth extraction in skeletal Class III malocclusion.

The patient was a 12-year-old girl with a skeletal class III malocclusion characterized by mandibular protrusion, a high mandibular plane angle, severe negative overjet and deep overbite. The patient's mandibular first premolar teeth were extracted following the standards of edgewise mechanotherapy. The total active treatment time was 19 months, however, retention was needed until the patient was 19 years old. The malocclusion has been treated satisfactorily resulting in correction of the functional and esthetic flaws without orthognatic surgery.

Bicuspid↗