PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “ORTHODONTICS, CORRECTIVE”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 127 records · Page 7Linked to original sources
PubMed2006

Skeletal anchorage for orthodontic correction of maxillary protrusion with adult periodontitis.

Because the number of adult patients seeking orthodontic treatment is increasing, orthodontists are becoming more likely to encounter patients with adult periodontitis. However, it is sometimes difficult to establish anchorage because of poor periodontal tissues in patients with adult periodontitis. This article reports the successful use of skeletal anchorage to treat a maxillary protrusion case complicated by severe adult periodontitis. A female patient aged 50 years seven months showed a skeletal Class II jaw base relationship. A spacing of five mm in the upper anterior teeth with an overjet of 7.5 mm and overbite of four mm was observed. She had generalized horizontal bone loss in both arches, with vertical bone loss in the posterior segment. After periodontal treatment, miniplates were placed in the zygomatic process, and retraction and intrusion of the maxillary incisors were performed. After active treatment for 21 months, the upper incisors had been inclined 9.5 degrees lingually, intruded two mm at the apex, and good anterior occlusion was achieved. Acceptable occlusion and periodontal tissue were maintained after a retention period of two years. Our results suggest that skeletal anchorage is useful for retraction and intrusion of upper incisors in cases of maxillary protrusion with severe adult periodontitis.

Female↗
PubMed1992

Patterns of incisor root resorption before and after orthodontic correction in cases with anterior open bites.

External root resorption is a frequent iatrogenic consequence of orthodontic treatment, particularly in the maxillary anterior teeth. Since resorption also occurs is a normal function of aging and since altered behaviors such as bruxism and chronic nailbiting accelerate resorption even in the absence of treatment, it was hypothesized that the long-term orthopedic forces of tongue thrusting leading to anterior open bites would also enhance the rates of clastic activity. In a series of 32 adolescents with open bites, the roots of permanent maxillary central incisors were significantly shorter and exhibited higher modal grades of periapical resorption than a matched series with deep bites before treatment. The open bite group also had less facial bony support for these teeth. Both series experienced discernible resorption during full-banded treatment but to comparable extents so that, after active treatment, the open bite series continued to possess significantly greater degrees of resorption. Consequently, the oral forces leading to apertognathia are themselves destructive of root integrity and merit early recognition and interception.

Adolescent↗
PubMed1999

Relapse after orthodontic correction of maxillary median diastema: a follow-up evaluation of consecutive cases.

An evaluation of 96 treated orthodontic patients with maxillary median diastema ranging from 0.50 mm to 5.62 mm (mean 1.22, SD 0.85) was performed 4.0 to 9.0 years after completion of active treatment. Pre- and posttreatment data were gathered from available records. Follow-up data were gathered from records and interviews of 37 patients, and from phone interviews of 59 patients. The incidence of diastema relapse was 49% when scored as either presence of a measurable space at follow-up, a history of orthodontic or prosthetic retreatment to close a reopened space, or continued use of a retainer to control relapse tendency. Logistic regression analysis revealed that pretreatment diastema size and presence of a family member with a similar condition were the only significant risk factors for relapse (p<0.05), while pretreatment spacing in the maxillary anterior dentition approached significance (p = 0.10). No association was found between relapse and presence of an abnormal frenum or an osseous intermaxillary cleft, although patients with an abnormal frenum had a wider pretreatment diastema than those with a normal frenum (p<0.05). Fremitus of the maxillary incisors was the only parameter at follow-up associated with space reopening (p<0.01).

Adolescent↗
PubMed1983

The surgical-orthodontic correction of mandibular deficiency. Part I.

Persons with mandibular deficiency and Class II malocclusions have a spectrum of esthetic, skeletal, and occlusal characteristics. In many of these patients optimal overall results are best obtained via a combined orthodontic-surgical approach. In such cases a critical patient evaluation is essential to decide (1) the optimal operation and (2) the appropriate orthodontic-surgical sequencing. In Part I of this article our method of making these two basic decisions is presented, the decisions being predicated upon achieving optimal esthetic, functional, and stable results. In addition, two of the possible orthodontic-surgical approaches--the augmentation genioplasty and the anterior maxillary ostectomy are discussed in detail. These approaches are illustrated with representative cases. In Part II of the article additional options for combined orthodontic surgical-management of this patient population will be discussed.

Adolescent↗
PubMed1980

Vertical maxillary deficiency with cleidocranial dysplasia. Diagnostic findings and surgical-orthodontic correction.

An anatomic pattern of dentofacial deformity consistent with the diagnosis of vertical maxillary deficiency (short face syndrome, Type 2) was observed in a patient with cleidocranial dysplasia. Detailed description of diagnostic findings and the coordinated sequence of surgical-orthodontic care over a 16-month period of follow-up are presented. An 11 mm lengthening of facial height was obtained. Results of surgical and orthodontic stability are presented. A relationship between conditions with anodontia or pseudo-anodontia and vertical maxillary deficiency is hypothesized.

Adolescent↗
PubMed1996

Changes in the gingival structure of maxillary permanent teeth related to the orthodontic correction of simple anterior crossbite.

The aim of this study was to describe changes in the gingival structure of maxillary permanent teeth related to correction of anterior crossbites. Twenty-eight children with one tooth in crossbite were included in the study. An oral hygiene program, was established. The tooth in crossbite (X tooth) and its contralateral (C tooth) were examined before the beginning of treatment, immediately after, 3 and 6 months after crossbite correction. The plaque index (PII) of the X tooth decreased from the first to the last examination. The PII of the C tooth increased during treatment and decreased after it. The gingival index (GI) and probing depth (PD) of both teeth increased during treatment and decreased after it. The width of the keratinized gingiva (KG) of both teeth decreased from the first to the last examination. The width of the attached gingiva (AG) of the X tooth decreased from the first to the last examination, and of the C tooth between the first and second examination. Analyses of variance of the values of the four examinations were significant in the X tooth for GI, PD, KG, and AG, and in the C tooth for GI and AG. The differences between the C and X teeth in the four examinations were significant in PD, KG, and AG. The current study indicates that orthodontic labial displacement of maxillary tooth related to the correction of simple anterior crossbite, under an oral hygiene program, is innocuous to the periodontium.

Adolescent↗
PubMed1980

Surgical-orthodontic correction of maxillary retrusion by Le Fort I osteotomy and proplast.

The combined efforts of the orthodontist and surgeon are necessary for successful treatment of most patients with maxillary retrusion. Both the aesthetic and functional manifestations of this dento-facial deformity can usually be effectively treated by maxillary advancement, augmentation of the midfacial region and orthodontics. Treatment planning, pre- and post-surgical orthodontic treatment principles, and surgical considerations in treating 25 adults with maxillary retrusion are described and illustrated. Surgical advancement of the maxilla by Le Fort I osteotomy, proper alignment of the teeth by orthodontics, and augmentation of the paranasal, canine fossae and malar regions with Proplast, were the common denominators of successful treatment.

Adolescent↗
PubMed2005

Unusual orthodontic correction of bilateral maxillary canine-first premolar transposition.

Tooth transposition is a subject that intrigues orthodontists because of the associated treatment planning. Approximately 0.3-0.4% of the population has this type of tooth disharmony, and in the literature, most authors are in disagreement about the treatment approach. In this article, a case is presented of bilaterally maxillary canine-first premolar transposition associated with bilaterally upper lateral incisor agenesis treated in a very unusual way. The transposed teeth were orthodontically reversed to their normal sequence and the missing lateral incisor spaces closed. We choose this approach because once the decision was made to close the upper lateral incisor agenesis spaces, it was inadequate to position the upper first premolars in contact with the central incisors.

Anodontia↗
PubMed1978

Surgical-orthodontic correction of vertical maxillary excess.

Superior repositioning of the maxilla via maxillary ostectomy has proved to be useful method of treating patients with vertical maxillary excess. It is indicated primarily in patients with lip incompetence, excessive exposure of maxillary anterior teeth, long lower facial height, contour-deficient chin, and either Class I or Class II malocclusion. We have used this procedure as routine treatment for vertical maxillary excess over the past 5 years. Timing of the surgery is not so important in non-open-bite patients, and the procedure can be done with equal success before any orthodontic intervention, during orthodontic treatment, and following all orthodontic procedures. Timing is primarily dependent upon the orthodontist's desires. Since the surgery can produce a much simpler orthodontic problem, thus reducing treatment time and allowing a better over-all result, we recommend that it be done as early in treatment as possible. Clinically, the over-all improvement in facial appearance and the predictability and stability of the results have made this a most versatile and effective procedure when carried out with good planning, proper execution and attention to detail.

Adolescent↗
PubMed2006

Relapse tendency after orthodontic correction of upper front teeth retained with a bonded retainer.

OBJECTIVE: To investigate the amount and pattern of relapse of maxillary front teeth previously retained with a bonded retainer. MATERIALS AND METHODS: The study group consisted of 135 study casts from 45 patients. Recordings from study models before treatment (T1), at debonding (T2), and 1 year after removal of the retainer (T3) were present. All patients had been treated with fixed edgewise appliances. The irregularity index (sum of contact point displacement [CPD]) and rotations of front teeth toward the raphe line were calculated at T1, T2, and T3. RESULTS: The mean irregularity index at T1 was 10.1 (range 3.0-29.9, SD 5.4). At T2 it was 0.7 (range 0.0-2.1, SD 0.7), and at T3 it was 1.4 (range 0.0-5.1, SD 1.2). Fifty-five teeth in 42 patients were corrected more than 20 degrees between T1 and T2 (mean correction 31.4 degrees range 20.0-61.7), and mean relapse in this group was 7.3 degrees (range 0.0-20.5). Regarding alignment of the maxillary front teeth, the contact relationship between the laterals and centrals seems to be the most critical. A significant positive correlation was found between the amount of correction of incisor rotation and the magnitude of relapse but not between the amount of correction of CPD and the magnitude of relapse. Eighty-four percent of the overcorrected CPDs returned to a desired position. CONCLUSIONS: Minor or no relapse was noted at the 1-year follow-up.

Adolescent↗
PubMed1993

Electromyographic changes resulting from orthodontic correction of Class III malocclusion.

This study measured the electromyographic (EMG) amplitudes of the interference pattern (IP) and the integrated EMG (IEMG) of the masseter and temporal muscles in 10 children with Class III malocclusion before, during, and after treatment with a myofunctional appliance (the monobloc), and compared the EMG values with those obtained from 10 children with Class I occlusion. The results showed that before treatment the mean amplitude values of IP were significantly higher in the Class III than in the Class I group. The mean amplitude values for IP activity in both muscles decreased during and after treatment; however, mean values of the IEMG activity did not show significant change for either muscle. These results are attributed to changes in the length of the muscle fibres as well as to neural modifications. This study demonstrates a non-invasive method that can be used to study the functional effects of orthodontic treatment.

Child↗
PubMed1990

Surgical-orthodontic correction of transverse maxillary deficiency.

A conservative osteotomy of the zygomaticomaxillary buttress in combination with a rapid palatal expansion appliance is a dependable technique for the treatment of horizontal maxillary deficiency in adults. This procedure has been used successfully in 56 patients in our series, but 17 patients (30 per cent) required a midpalatal osteotomy. In two patients, overexpansion was not achieved because of necrosis of the mucosa. In three other patients, expansion had to proceed at a slower pace because of mucosal ulceration. There have been no other complications. The procedure is indicated mainly in those patients with a horizontal deficiency who do not require subsequent surgery, but for some patients it may be the preliminary procedure. Twelve patients (21 per cent) had subsequent orthognathic surgery. Follow-up has been from 1 to 12 years and there has been no relapse. In our opinion, the zygomaticomaxillary buttress is the primary area of resistance to lateral movement of the maxilla by rapid maxillary expansion appliances.

Adult↗