PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Tooth Movement Techniques”

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 19 recordsLinked to original sources
PubMed1992

[The use of orthodontic goniometry to study apical expansion, using Pr. Planas' method: neuro-occlusal rehabilitation].

In this work, the method of orthodontic goniometry is used, which is a simple technique and not expensive, that allows us to determine the apical expansion in the studied models. 42 patients are studied by means of the techniques of Neuro-Occlusal Rehabilitation. We reach by this method expansion to the level of the apex as far as 12 mm in the lower arch and 11 mm in the upper arch. A simple statistic analysis is made which shows an average of expansions of 7.76 mm at crown level of the upper arch and 8.11 mm at apex level; at the crown level of lower arch we get 6.43 mm and apex level 5.8 mm. We think these results are interesting and they should make us study in depth the Neuro-Occlusal Rehabilitation and its principles.

Cephalometry↗
PubMed1978

Extrusion of endodontically treated teeth.

Extrusion in a vertical direction was used in efforts to retain 14 teeth that had subcrestal fractures, perforations, or caries below the gingival tissue. Indications for the procedure, techniques, and complications are discussed.

Acid Etching, Dental↗
PubMed1978

The palatally impacted canine: a new approach to treatment.

A method for the application of traction to misplaced maxillary canines in the palate is described. The treatment approach is from the palatal side, with initial traction applied in a lingually downward direction to prevent interference with the neighboring teeth. Emphasis is placed on the suitability of the method as an adjunct to almost any of the established techniques. In this way improving their efficiency in treating the over-all orthodontic problem.

Child↗
PubMed1978

Cleidocranial dysostosis: a multidisciplinary approach to treatment.

To ensure eruption of the dentition in patients with cleidocranial dysostosis, close collatoration between the oral surgeon and the orthodontist is essential to determine the sequence of extraction, the teeth to be ligated, the preferred technique of ligation, and the approach for surgical exposure.

Child↗
PubMed1978

Peridontal status following surgical-orthodontic alignment of impacted teeth.

Treatment of impacted teeth is often a combination between oral surgery and orthodontics. This study evaluates the gingival condition of impacted teeth after surgical-orthodontic treatment, where two different surgical methods were used. In one group (n = 11) the teeth were radically exposed and orthodontically moved to their final position. In the other group (n = 11) the teeth were partially exposed by raising a mucoperiosteal flap. Orthodontic traction was then applied; whereafter the flap was sutured back into place. The results showed that one of the teeth in the partial exposure group and seven in the radical exposure group showed loss of attachment. This study indicates that a combination of mucoperiosteal flap technique and applied orthodontic traction is prefered to minimize the loss of attachment in cases of displaced impacted teeth.

Adolescent↗
PubMed1977

A modified technique for ligating impacted canines.

This article describes a combined surgical-orthodontic method to manage impacted teeth, primarily maxillary canines. The method uses a modified type of ligation chain that enables the oral surgeon to lasso the tooth with ease and affords the orthodontist large, successively placed eyelets to which he can easily tie elastic thread in order to keep continuous heavy force pulling the tooth toward the oral cavity.

Cuspid↗
PubMed1979

Traction--a surgical/orthodontic procedure.

Maxillary crowding may cause failure of eruption of the canine. The teeth so displaced are directed buccally or palatally. In both cases, surgical intervention is indicated after space has been made in the arch. Palatally displaced canines are treated by surgical excision of palatal mucosa to promote eruption. Wide excision is indicated to prevent the healing process from covering the exposed tooth crown. Because of the anatomy of the buccal mucosa, however, surgical excision of the crowns of buccally displaced canine frequently results in periodontal problems. An alternative technique is therefore presented; this involves the surgical exposure of the crowns of buccally displaced teeth to allow the attachment of a wire traction hook. The crown is then recovered. The traction hook provides a point of attachment, so that orthodontic forces may be applied to the unerupted tooth to guide its eruption. The preservation of the mucosal flap ensures a normal epithelial attachment develops on the buccal surface of the tooth, and the normal gingival anatomy of the buccal mucosa is maintained. The procedure may also be used in cases where upper incisors have been prevented from erupting because of the presence of supernumerary teeth. Even after surgical removal of the supernumerary teeth, the permanent incisors often fail to erupt. In such cases, the placement of traction hooks will enable the orthodontist to bring the unerupted teeth into their correct positions in the arch.

Adolescent↗
PubMed1976

The effect of different extraction sites upon incisor retraction.

1. From this study, it was found that in cases treated by the Begg technique one can anticipate greater retraction of the anterior dental units in nonextraction (see article) cases, in both types of premolar extraction cases, and in cases, involving extraction of first molars plus first premolars than would be expected on the basis of root surface area resistance values. 2. There is a likely explanation for this. Molars were maintained upright and allowed to move bodily only while incisors were not only moved bodily but often partially tipped as well. 3. The actual mean anterior retraction in first molar extraction cases exhibited a close approximation to the expected mean anterior retraction values in relation to root surface resistance values. 4. Second premolar extraction is one answer to overretraction and has the added edge of creating even less incisor retraction than second premolar extraction. 5. It was also found that the extraction of premolars alone did not result (see article) in a significant change in the increased eruption of the third molars into functional occlusion. A very significant improvement in the rate of sucessful third molar eruption was found in first molar extraction cases and in cases involving extraction of first molars plus first premolars. 6. The mean ages of the patients in the various treatment categories at the start of treatment were similar enough to each other to suggest that age at the start of treatment had no bearing on the success rate of third molar erup tion. Extraction-site selection seemed to be the dominating factor in successful third molar eruption. 7. It was found that the group of cases that exhibited the least amount of anterior retraction also inhibited the least amount of anterior relapse and, conversely, the group of cases exhibiting the greatest amount of anterior retraction also exhibited the greatest amount of anterior relapse. (see article) 8. The nonextraction cases, with no extraction space to close, were treated in the shortest mean time, while the eight-tooth (first molar plus first premolar) extraction cases having the greatest amount of extraction space required the greatest amount of mean treatment time.9. In conclusion, it can be said that changing the location of the extraction site resulted in a change in relative root surface areas of the opposing anchor units in the anterior and posterior segments. There was a definite and predictable change in the amount of anterior retraction achieved by varying the location of the extraction site. This should be considered in the diagnosis, so that a desired treatment goal for the final position of the incisors within the facial profile can be achieved.

Bicuspid↗
PubMed1975

On optimum orthodontic force theory as applied to canine retraction.

The study reported here was undertaken in an attempt to contribute, from a theoretical standpoint, to the knowledge and understanding of optimum force theory, particularly as it may be relevant to canine retraction. The following statements are derived from my analysis of the applicable published literature and the results of the present investigation: 1. This study lends support to the beliefs, from the findings of previous investigations, 20, 22 that the center of rotation for simple tipping is three tenths to four tenths of the distance from the root apex to the alveolar crest and that the center of resistance is at approximately midroot for the single-rooted tooth. 2. For a given distal driving force, increasing the countertipping couple from zero causes the center of rotation to "move" from a point near the apical end of the middle third of the root to the root apex and then to infinity. That is, the couple to be developed by the appliance to produce crown movement is smaller than required for bodily movement. Also, increasing the rotational stiffness of a canine-retraction appliance will result in greater inherent potential for canine root control and a greater probability of achieving bodily movement. 3. In a specific orthodontic case, an average periodontal stress value (active force divided by root area) can be used as a basis of comparison of suggested active force magnitudes among several single-rooted teeth having different root surface areas, provided all teeth are to experience the same form of displacement (for example, bodily movement). Similarly, differences in average stress magnitudes developed in the periodontium, rather than differences in root surface areas, are actually the basis for the differential force theory. 4. Clinical studies have suggested that the size of active force for bodily movement or root movement of a given tooth be two to three times that employed in simple tipping of the same tooth. Induced stress levels in the periodontium, especially at the root apex and alveolar crest locations, can be related to suggested magnitudes of aplied crown force components.

Activator Appliances↗
PubMed1977

Measurement of edgewise torque force in vitro.

The construction of a model for the measurement of palatal root torque is described. It was demonstrated that: 1. Halfway between the apex of a tooth and the arch wire the force was double that which was delivered at the apex. 2. The lateral incisors were subjected to appreciably more force than the central incisors. 3. The smaller the number of teeth acted upon, the greater the force they received.

Humans↗
PubMed1977

Tip-back mechanics.

Explore the source record for details and available documents.

Biomechanical Phenomena↗
PubMed1978

Indications for autotransplantation in cases of missing premolars.

The postoperative behavior of premolars transplanted before completion of root formation and the long-term prognosis for such teeth have recently been studied. After postoperative observation periods ranging between 3 years 4 months and 13 years 9 months, all of the thirty-four teeth in question were found to still be in place. Root formation had continued, supporting tissues had developed, and the teeth had erupted. In most instances they had functioned normally without giving rise to problems of any kind. Their status during the re-examination implied that most of them would function normally for many years to come, perhaps for a lifetime. Autotransplantation of missing premolars in many cases is the only alternative to prosthetic substitution, and it is our method of preference. However, substitution by autotransplantation cannot be applied unless a suitable transplant is available. Any premolar destined to be extracted for orthodontic reasons is a possible transplant. In young patients it is also a suitable one. In orthodontic extraction cases, therefore, suitable transplants are usually available. In nonextraction cases, none is available unless teeth in other dental arch quadrants are "sacrificed." In the present report six cases are presented as examples of solutions to the problem of missing premolars by autotransplantation. The main combinations of missing teeth and types of malocclusion in which premolars extracted for orthodontic reasons can advantageously be used as substitutes for other premolars are defined. Also, the justification for "sacrificing" a premolar in one quadrant to the advantage of another quadrant is discussed.

Adolescent↗