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At least 1,459 records · Page 81Linked to original sources
PubMed2005

Radiolucent lesion of an unerupted mandibular molar.

A coronal radiolucent lesion of an unerupted and partially developed mandibular second molar was coincidentally found during a routine radiographic orthodontic examination of a generally healthy 9-year old girl. The size of the lesion increased continuously during a 2-year observation period. Histologic examination after extracting the tooth proved the lesion to be an idiopathic external coronal resorption. In a review of the literature, we found no original research on the subject. However, the number of case reports suggests that idiopathic external coronal resorptions are quite common in young patients. Their etiology, however, remains unclear. The case history, histologic findings, differential diagnoses, and possible treatment approaches suggested in the literature are described.

Child↗
PubMed2004

Orthodontics. Part 8: Extractions in orthodontics.

Extractions in orthodontics remains a relatively controversial area. It is not possible to treat all malocclusions without taking out any teeth. The factors which affect the decision to extract include the patient's medical history, the attitude to treatment, oral hygiene, caries rates and the quality of teeth. Extractions of specific teeth are required in the various presentations of malocclusion. In some situations careful timing of extractions may result in spontaneous correction of the malocclusion.

Bicuspid↗
PubMed1993

Case report BC: extraction decisions based on treatment responses.

We have all been into treatment and lost sight of the "plan" we were so familiar with at the treatment planning stage. Eighteen to 21 months into treatment, we are faced with extraction decisions or surgical planning that should have been addressed at 9 or 12 months. This case report illustrates a treatment plan with several variables that were dependent upon treatment responses. It also illustrates planning a gingival graft to increase the crown length of a first premolar after the canine was substituted as the lateral incisor.

Adolescent↗
PubMed1998

Eruption and function of maxillary third molars after extraction of second molars.

After extraction of maxillary second molars, will the third molars erupt into a functional position in a timely manner? To answer this question, 56 consecutively treated cases of maxillary second molar extraction were reviewed. The unerupted positions of the maxillary third molars were measured on cephalometric radiographs, ages of eruption were evaluated, positions of erupted third molars analyzed, and interproximal periodontal health of adjacent first molars compared. The results showed that, generally, the eruption of third molars was accelerated. Most of the third molars had acceptable interarch and intra-arch occlusal relationships. The interproximal periodontal health of the third molars was similar to that of adjacent first molars. Most maxillary third molars will successfully erupt into an acceptable position by the late teens.

Adolescent↗
PubMed1999

Deposition of calcified tissue around an overextended gutta-percha cone: case report.

CASE REPORT: Root canal treatment was performed in a mandibular right second premolar with a periapical lesion and apical resorption. The root canal was prepared with K-files using the step-back technique and 3% NaOCl as an irrigant; during obturation gross overfilling of gutta-percha occurred. The tooth was permanently restored with a post and core along with a crown. Although healing of the periapical lesion occurred and the patient reported that he was symptom-free, the tooth was extracted after 4 years because of a subgingival root fracture. Following extraction the tooth was examined with SEM. The examination revealed the presence of newly formed calcified tissue at resorption sites on the root apex. This newly formed tissue extended from the surface of the root around the apex to the extruded gutta-percha cone to which it was well adapted, forming a bridge between the cone and the root.

Adult↗