A longitudinal outcome study of intrusive luxation injuries to permanent maxillary incisors of children and adolescents

by Humphrey, Janice M.

Abstract (Summary)
A longitudinal outcome study was undertaken to identify variables that significantly influenced tooth survival and pulpal and periodontal outcomes of intruded permanent maxillary incisors of children and adolescents. Al1 cases were treated between June 1988 and June 1998 at The Hospital for Sick Children. Clinical and radiographie data were collected for 26 patients (19 males, 7 fernales) and 31 permanent maxillary incisors. Mean age at the time of injury was 9.3 years (range 5.5-17.8 years). Al1 pulpal and periodontd outcomes were observed at follow-up. Survival anaiysis was used to identiS, variables significantly related to the survival and pulpal necrosis for these incisors. Proportional hazards regression yielded significant prognostic models for survival and the diagnosis of pulpal necrosis (pX0.05 and pC0.02 respectively). lncisors intnided >6mm had a significantly decreased survival compared with incisors intmded <3mm (5 year survival0.45 and 1.0 respectively; pc0.0 1). Complex crown fractures were significantly related to the development of pulpal necrosis @<0.0 1). Logistic regression analysis showed that treatment method and severity of intrusion were related to the presence of RRR (pc0.04). This study represents the largest sample of intnided permanent incisors examined in an outcome study of children and adolescents exclusively. This information will be usef├╣l to clinicians and parents involved in emergency and follow-up care of these injuries. Key Words: permanent incisor, intrusion, survival, pulpal necrosis, replacement resorption, prognosis
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Source Type:Master's Thesis



Date of Publication:01/01/1999

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