Unexpected complications associated with mandibular fixed retainers: A retrospective study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00064165%3A_____%2F16%3A10318567" target="_blank" >RIV/00064165:_____/16:10318567 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15110/16:33162633 RIV/00216208:11110/16:10318567

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ajodo.2015.07.035" target="_blank" >http://dx.doi.org/10.1016/j.ajodo.2015.07.035</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ajodo.2015.07.035" target="_blank" >10.1016/j.ajodo.2015.07.035</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Unexpected complications associated with mandibular fixed retainers: A retrospective study

Popis výsledku v původním jazyce

Introduction: The purposes of this retrospective study were to describe the types of unexpected complications associated with mandibular fixed retainers and to assess their prevalences and possible etiologic causes. Methods: A total of 3500 consecutive patients (1423 male, 2077 female) treated with fixed appliances and a mandibular fixed retainer as a part of the retention protocol were screened during the retention period (2008-2013) for unexpected complications. Thirty-eight subjects (12 male, 26 female; mean age, 20.7 +- 8.9 years) with unexpected complications were identified and assigned to the unexpected complications group and compared with a randomly selected control group of 105 subjects (43 men, 62 women; mean age, 29.5 +- 9.7 years) without unexpected complications. Relationships between unexpected complications and cephalometric and clinical variables were evaluated. Results: An opposite inclination of the contralateral canines (twist effect) was found in 21 subjects. In 89.5%, the left canines were tipped buccally. A torque difference of 2 adjacent incisors (X effect) was identified in 12 patients. In 5 subjects, nonspecific complications were noted. Subjects in the unexpected complications group were significantly younger at debonding (P = 0.03) and had higher mandibular plane angles (P <0.0001) and increased pretreatment ventral positions of the mandibular incisors (P = 0.029). No differences were found between the groups with regard to treatment duration, wire type, failure rate, treatment changes in incisor proclination, or intercanine distance. Conclusions: Unexpected complications of mandibular fixed retainers are relatively rare. Facial divergence was identified as a possible predictor. However, the etiology is most likely multifactorial. Strong asymmetry among the patients with the twist effect suggests that the mechanical properties of retention wires may play a role and should be examined in the future.

Název v anglickém jazyce

Unexpected complications associated with mandibular fixed retainers: A retrospective study

Popis výsledku anglicky

Introduction: The purposes of this retrospective study were to describe the types of unexpected complications associated with mandibular fixed retainers and to assess their prevalences and possible etiologic causes. Methods: A total of 3500 consecutive patients (1423 male, 2077 female) treated with fixed appliances and a mandibular fixed retainer as a part of the retention protocol were screened during the retention period (2008-2013) for unexpected complications. Thirty-eight subjects (12 male, 26 female; mean age, 20.7 +- 8.9 years) with unexpected complications were identified and assigned to the unexpected complications group and compared with a randomly selected control group of 105 subjects (43 men, 62 women; mean age, 29.5 +- 9.7 years) without unexpected complications. Relationships between unexpected complications and cephalometric and clinical variables were evaluated. Results: An opposite inclination of the contralateral canines (twist effect) was found in 21 subjects. In 89.5%, the left canines were tipped buccally. A torque difference of 2 adjacent incisors (X effect) was identified in 12 patients. In 5 subjects, nonspecific complications were noted. Subjects in the unexpected complications group were significantly younger at debonding (P = 0.03) and had higher mandibular plane angles (P <0.0001) and increased pretreatment ventral positions of the mandibular incisors (P = 0.029). No differences were found between the groups with regard to treatment duration, wire type, failure rate, treatment changes in incisor proclination, or intercanine distance. Conclusions: Unexpected complications of mandibular fixed retainers are relatively rare. Facial divergence was identified as a possible predictor. However, the etiology is most likely multifactorial. Strong asymmetry among the patients with the twist effect suggests that the mechanical properties of retention wires may play a role and should be examined in the future.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

FF - ORL, oftalmologie, stomatologie

OECD FORD obor

—

Projekt

<a href="/cs/project/NT14189" target="_blank" >NT14189: Neočekávané komplikace ortodontických fixních retainerů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

American Journal of Orthodontics and Dentofacial Orthopedics

ISSN

0889-5406

e-ISSN

—

Svazek periodika

149

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

202-211

Kód UT WoS článku

000369693700010

EID výsledku v databázi Scopus

2-s2.0-84959343890