PubMed Health⌕ Search

Biomedical subjects

D L Turpin

Publications and source records attributed to D L Turpin.

At least 37 records · Page 2Linked to original sources
PubMed1996

A postretention study of patients presenting with a maxillary median diastema.

The purpose of this study was to assess postretention stability of maxillary midline diastema closure, to search for predictors of relapse, and to test for associations between relapse and other postretention changes. The sample consisted of 35 patients with pretreatment diastemas ranging from 0.9 mm to 3.0 mm (mean 1.4, SD = 0.5) following eruption of the maxillary canines. Data were gathered from treatment charts, study models, periapical radiographs, and cephalograms taken pretreatment, posttreatment, and 1 to 26 years postretention (mean 11.4, SD = 6.4). Measurable diastema relapse was observed in only 12 cases. The majority of the relapse was 0.6 mm or less, and maximum relapse was 3.0 mm. Abnormal frenums and/or intermaxillary osseous clefts did not appear to be risk factors for relapse, and no pretreatment predictors of relapse could be established. The only posttreatment change associated with diastema relapse was proclination of the maxillary incisors (p < 0.01).

Adolescent↗
PubMed1995

Two patients with severely displaced maxillary canines respond differently to treatment.

The patient with a severely displaced maxillary canine continues to challenge the orthodontic specialist. When the two patients in the following case reports presented, their problems seemed similar: each had a palatally displaced canine. However, unique clinical problems were soon diagnosed that led to the development of different treatment approaches. These differences are worth discussing, especially in light of newly published studies. In planning treatment for these two patients, the following questions are worth considering. 1. Is it common for other dental anomalies (small lateral incisors, missing teeth) to occur more frequently in patients with palatally displaced canines? 2. Following surgical exposure of palatally displaced maxillary canines, how significant are the risks of tooth movement with regard to periodontal health, vitality, and retention? 3. Are new or improved surgical procedures becoming available to bring severely impacted teeth into alignment? 4. When planning ahead to replace a missing premolar with an endosseous implant, is it better to retain the primary molar as long as possible or extract it during treatment? 5. How stable is the closure of a maxillary median diastema years after a reasonable period of retention?

Adolescent↗