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European Journal of Orthodontics - current issue

Escrito por Instituto Dentário em . Publicado em Alimentadores de Notícias

European Journal of Orthodontics - current issue

One of the leading periodicals in its field, publishes scientific papers aimed at all orthodontists.

European Journal of Orthodontics Current Issue

  • SummaryBackgroundClosed and open surgical techniques are two different main approaches to surgical exposure of palatally displaced canines (PDCs). Because there is insufficient evidence to support one technique over the other, there is a need for randomized controlled trials.ObjectivesTo compare surgery time, complications and patients’ perceptions between closed and open surgical techniques in PDCs.Trial designThe trial was a multicentre, randomized, controlled trial with two parallel groups randomly allocated in a 1:1 ratio.Material and methodsStudy participants were 119 consecutive patients from 3 orthodontic centres, with PDCs planned for surgical exposure, randomly allocated according to a computer-generated randomization list, using concealed allocation. Full-thickness mucoperiosteal flap was raised, and bone covering the canine was removed in both interventions. In closed exposure, an attachment with a chain was bonded to the canine and the flap was sutured back with the chain penetrating the mucosa. In open exposure, a window of tissue around the tooth was removed and glass ionomer cement placed on the canine crown, to prevent gingival overgrowth during spontaneous eruption. Patient perceptions were assessed with two questionnaires, for the evening on the day of operation and 7 days post-surgery.BlindingIt was not possible to blind either patients or care providers to the interventions. The outcome assessors were blinded and were unaware of patients’ intervention group.ResultsSeventy-five girls and 44 boys, mean age 13.4 years (SD 1.46) participated in the study and got either of the interventions (closed exposure, n = 60; open exposure, n = 59). Surgery time did not differ significantly between the interventions. Complications though were more severe in bilateral cases and the patients experienced more pain and impairment in the open group.ConclusionThere were no statistically significant differences regarding surgery time between the groups. Postoperative complications were similar between the groups in unilateral PDCs, but more common in the open group in bilateral cases. More patients in the open group experienced pain and impairment compared to the closed group.Trial registrationTrial registration: ClinicalTrials.gov, ID: NCT02186548 and Researchweb.org, ID: 127201.

  • Authors: DevlinHugh and CravenRebecca, 2nd Edn, Publisher: Oxford University Press, Oxford, Price: £29.99, pp. 336 ISBN: 978-0-19-875978-2.

  • SummaryObjectivesTo investigate which surgical technique orthodontists prefer for exposing palatally impacted canines (PICs), and to compare closed exposure and glass-ionomer open exposure (GOPEX) with regard to pre- and post-surgical orthodontic variables.Materials and methodsA questionnaire with 19 questions and three cases visualising superficial, deep, or medial PICs was sent to 48 orthodontists working in a Swedish county. Sixty case records for patients with unilateral PICs from two centres were analysed; 30 patients having GOPEX (Centre A), and 30 undergoing closed exposure (Centre B). Pre- and post-surgical orthodontic variables were collected from the dental records.ResultsThe response rate was 81 per cent. There was an equal distribution of preference between open and closed exposure. Glass-ionomer cement (GIC) was predominately used as surgical packing in open exposure. No active traction was initiated until the canine erupted spontaneously. In the closed exposure cases, traction started shortly after exposure. The clinicians mentioned similar advantages of choosing one technique over the other and the main basis for the decision was the clinician’s preference and not the location of the canine. There were no differences regarding post-exposure complications between the techniques. The overall treatment time was the same but there were fewer appointments and significantly shorter active treatment time with traction of the PIC in the GOPEX group.LimitationsDespite the homogeneity of the baseline patient characteristics, pre- and post-surgical orthodontic variables were analysed retrospectively, therefore, it is difficult to assess what impact these confounding factors may have had on the treatment time.ConclusionsThe choice of exposure technique depends on the clinician’s preferences. The active treatment time is shorter and the number of appointments fewer with open exposure when GIC is used as surgical packing.

Dentistry News

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