Effect of Interceptive Strategies on the Clinical Outcome of Maxillary Impacted Canines

Universitaire Ziekenhuizen KU Leuven84 enrolled

Overview

This study aims to investigate the effect of 3 randomly applied interceptive measures (slow maxillary expansion, extraction of deciduous canines and no intervention) on maxillary canine impaction in patients with early mixed dentition and lack of space in the dental arch. Additionally, these groups are compared with a control group with adequate space. Patients with at least one impacted maxillary canine, presence of deciduous canines and absence of crossbite were included. The canine position is assessed by measuring five variables (sector of the canine cusp, canine to midline angle, canine to first premolar angle, canine cusp to midline distance, and canine cusp to maxillary plane distance) on 2 panoramic radiographs at 0 (T1) and 18 months (T2).

The detailed information regarding methodology has been entered in following sections

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Tooth, Impacted

Interventions

Eligibility

Sex: ALLMin age: 7 YearsMax age: 11 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * All patients presenting at the intake consultation of the Department of Orthodontics of University Hospitals Leuven, Belgium from September 2016, with at least one maxillary permanent canine impaction are invited to participate. Canine impaction is diagnosed based on a panoramic radiograph, taken for standard evaluation of dental development and associated pathology. A maxillary canine is considered to be impacted when the canine to midline angle was ≥15° (Alqerban et al. 2014; Warford et al. 2003). Only impacted maxillary canines with incomplete root formation and with persisting deciduous canines are included. Exclusion Criteria: * presence of uni- or bilateral posterior dental crossbite, * upper permanent canines showing root malformation, ankylosis or fully erupted, * evidence of root resorption of adjacent teeth, previous orthodontic treatment, * craniofacial syndromes, * systemic disease that would impede orthodontic treatment/surgery and recent exposure to radiotherapy. * large eruption follicles seen on the permanent canines

Outcomes

Primary Outcomes

Number of Definitive Upper Canines That Erupt Spontaneously up to 18 Months of Follow up

Number of definitive upper canines that erupt spontaneously up to 18 months of follow up.

Time frame: 18 months

Number of Definitive Upper Canines That Erupt Spontaneously After 18 Months of Follow up

Number of definitive upper canines that erupt spontaneously after 18 months of follow up..

Time frame: After the first 18 months of follow up

Secondary Outcomes

Sector Where the Canine is Located

The sector is the position where the canine overlaps with adjacent teeth in a panoramic radiograph. The distance between the dental midline and the premolars is divided in 5 equally large spaces (units or categories 0 to 4) defined as follows: 0 = normal position (the cusp of the definitive canine is at the primary canine), 1 = distal to the long axis of the lateral incisor, 2 = mesial to the long axis of the lateral incisor, 3 = distal to the long axis of the central incisor, or 4 = mesial to the long axis of the central incisor This outcome measurement refers to the change in the Sector category where the canine is located, measured on a panoramic RX

Time frame: 18 months

Angulation of the Canine Towards the Dental Midline

Change in the Angulation of the canine towards the dental midline, measured on a panoramic RX

Time frame: 18 months

Angulation of the Canine Towards the First Premolar

Change in the Angulation of the canine towards the first premolar

Time frame: 18 months

Distance Between the Canine Cusp and the Midline

Change in the Distance between the canine cusp and the midline

Time frame: 18 months

Distance Between the Canine Cusp and the Occlusal Plane

Chenge in the Distance between the canine cusp and the occlusal plane, measured on a

Time frame: 18 months

Need for Further Minor and/or Major Orthodontic Intervention

Need for further minor and/or major orthodontic interventions

Time frame: 18 months after baseline

Effect of Interceptive Strategies on the Clinical Outcome of Maxillary Impacted Canines

Overview

Conditions

Interventions

Eligibility

Locations (1)

Outcomes

Primary Outcomes

Secondary Outcomes