Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Tooth Resorption”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

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

At least 631 records · Page 35Linked to original sources
PubMed1986

Apical root resorption of upper incisors caused by intrusive tooth movement: a radiographic study.

The purpose of the study was to investigate whether root resorption of the upper incisors occurs during intrusion of maxillary incisors. It examines the possibility of a relationship between the amount of root shortening and duration of the intrusive force. The ratio of root length before and after intrusion was compared in 20 patients. In 66 incisors with an intrusion period of 29 weeks, an intrusion of 3.6 mm was performed. The control group consisted of 15 patients who underwent no orthodontic treatment. Consequently, 58 incisors had no intrusion. The follow-up time between 2 measurements was +/- 28 weeks. The findings clearly showed root shortening after intrusion. A mean resorption of 18% of the original root length was found. In comparison, none of the control patients showed root shortening. No correlation has been found between the amount of resorption and the amount and duration of intrusion. In combination with the apical deflection of the root, the nasal floor was occasionally a limiting factor for intrusion and this may have caused root resorption.

Adolescent↗
PubMed1989

[Root fracture and tooth luxation. Endo-orthodontic technic after 15 years].

The authors described a personal treatment method for the traumatic root fractures in the permanent incisors, and the review of their results after 15 years. The method consists in the good immobilisation and fixation of the injured teeth, with orthodontic bands and brackets and arch wire. They put this orthodontic contention for one-two months, and after x-ray control and pulp vitality checks, removed it. They presented also the use of the same technique in the luxations of permanent incisors, and compared the results. In the root fractures the authors obtain good long distance results, such as pulp vitality, good health, calcified tissue in the fracture zone, good stability of the tooth. Otherwise in the incisors luxations they frequently founded pulp necrosis, and root resorption in the long distance controls.

Child↗
PubMed1995

A radiographic comparison of apical root resorption after orthodontic treatment with the edgewise and Speed appliances.

Apical root resorption is a serious iatrogenic problem sometimes associated with orthodontic treatment. The Speed appliance (Strite Industries, Ltd., Ontario, Canada) provides a continuous rotatory and torque action through its spring clip mechanism, in contrast with the edgewise appliance that may provide an interrupted force. The effect of continuous action on root resorption compared with the interrupted action of the edgewise system has not been investigated previously. The purpose of the present investigation is to test the null hypothesis that there is no difference in the apical root resorption seen after orthodontic treatment with the edgewise straight wire and the Speed appliance systems. Pretreatment and posttreatment periapical radiographs of 63 patients, (30 treated with the Speed 0.018 bracket and 33 with the 0.018 edgewise bracket) were studied. The long cone paralleling technique was used for all the radiographs. Any image distortion between the pretreatment and posttreatment radiograph was calculated and compensated for by using the crown length measurements, on the assumption that the crown length remains unaltered during the treatment period. Quantitative measurements of crown and root lengths for the maxillary and the mandibular central and lateral incisors were compared. Means and standard deviations for the percentage root resorption per tooth group were calculated. A three-factor analysis for variance (ANOVA test) was performed to determine whether there was an appliance, treatment, or gender effect on the amount of root resorption seen after treatment. No statistically significant difference in root resorption between the two appliance systems was found.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1997

Resorption of mandibular canal wall in the edentulous aged population.

STATEMENT OF PROBLEM: The mandibular canal wall may be affected by the progress of residual ridge resorption after tooth extraction. Little knowledge is available regarding the relationship of specific systemic factors and the resorption of the mandibular canal wall. PURPOSE: The purpose of this study was to assess the status of the mandibular canal in the edentulous mandible and to determine whether there is any relationship between the resorption of the mandibular canal wall and selected health indices in the elderly. MATERIAL AND METHODS: The status of the mandibular canal was assessed from panoramic radiographs of 128 edentulous elderly subjects (32 men and 96 women). RESULTS: The superior border of the mandibular canal was more frequently resorbed in women (32.6%) than in men (9.8%). Resorption in the mandibular canal wall was significantly more prevalent in subjects with asthma (odds ratio: 6.0), with thyroid disease (odds ratio: 3.04), and with a cortical thickness at the mandibular angle less than 1 mm thick (odds ratio 2.74). CONCLUSION: The findings suggest that gender, asthma, and thyroid disease play important roles in resorption of the mandibular canal wall.

Aged↗