EVALUATION OF TREATMENT RESULTS AND STABILITY IN PATIENTS WITH ANTERIOR OPEN BITE TREATED BY PREMOLAR EXTRACTIONS OR MINI-IMPLANT ANCHORED INTRUSION

Year 2017, Volume: 27 Issue: 3, 147 - 153, 03.12.2017

Işıl Aras

https://doi.org/10.17567/ataunidfd.381304

Cited By: 1

Abstract

ABSTRACT

Aim: The aim of this study was to compare the
treatment results and stability of open bite treatment achieved via intrusion
of posterior teeth and extraction of 1^st premolars

Material and Methods: This study was
conducted on pretreatment (T1), posttreatment (T2) and follow-up (T3)
cephalograms of 28 patients who received open bite treatment. 14 patients (mean
age 14.61±0.87) were treated with the extraction of the 1^st premolar
(extraction group: EG) while 14 patients (mean age 15.06±1.05) had bite closure
via intrusion of the posterior teeth using mini-implants (mini-implant group:
MG). The mean follow-up periods in EG and MG were 3.32±1.25 (range, 2.10-6.20)
and 2.74±0.77 years (range, 2.05-4.34), respectively.

Results: At T2, SNB increased and SNGoGn decreased significantly in MG, with
significant intergroup difference (p<0.05). Maxillary and mandibular
incisors extruded significantly in both groups, with greater amounts in EG
(p<0.05). Maxillary and mandibular incisors’ inclinations decreased
significantly in EG, with a significant intergroup difference (p<0.05).
Maxillary posterior teeth intruded significantly in MG, with a significant
intergroup difference (p<0.05). At T3, significant intrusion of upper
incisors and extrusion of posterior teeth were observed in EG and MG,
respectively, and these measurements showed significant intergroup differences
(p<0.05). Decreases in overbite were significant in both groups, with no
intergroup difference. The clinically significant relaps rates were 7.14% (1
patient) and 14.28% (2 patients) in MG and EG, respectively.

Conclusion: Even though
mini-implant supported intrusion and extraction therapy achieved bite closure
via different treatment effects, both groups showed similar relaps tendencies
at the follow-up.

Keywords: open bite, tooth extraction, tooth
intrusion

 

PREMOLAR ÇEKİMLERİ
VEYA MİNİ VİDA DESTEKLİ İNTRÜZYON İLE TEDAVİ EDİLMİŞ ÖN AÇIK KAPANIŞLI
HASTALARDA TEDAVİ SONUÇLARININ VE STABİLİTENİN DEĞERLENDİRİLMESİ

ÖZ

Amaç: Bu çalışmanın amacı 1. Premolar çekimi ve
maksiller posterior dişlerin intrüzyonu ile gerçekleştirilen açık kapanış
tedavilerinin sonuç ve stabilitesinin karşılaştırılmasıdır.

Gereç ve Yöntem: Bu çalışma açık
kapanış tedavisi gören 28 hastanın tedavi öncesi (T1), tedavi sonrası (T2) ve
takip (T3) sefalometrik röntgenleri üzerinde yürütüldü. 14 hastada (ortalama
yaş 14.61±0.87) 1. Premolar çekimli konvensiyonel ortodontik tedavi
uygulanırken, 14 hastanın (15.06±1.05) tedavisi posterior dişlerin intrüzyonu
ile yapıldı. Çekim ve mini-implant gruplarında ortalama takip zamanları sırası
ile 3.32±1.25 ve 2.74±0.77 yıldı.

Bulgular: Tedavi sonunda mini-implant grubunda,  SNB açısındaki artış ve SNGoGn açısındaki
azalma önemli bulundu (p<0.05). Bu ölçümler bakımından gruplar arasındaki
fark da önem bulundu (p<0.05). 
Maksiller ve mandibular kesici dişler çekim grubunda daha fazla olmak
üzere her iki grupta da önemli ekstrüzyon gösterdi (p<0.05). Tedavi sonunda
gruplar arasında önemli bir fark ile, mini-implant grubunda maksiller posterior
dişlerin intrüzyonu önemli bulundu (p<0.05). T3 döneminde, çekim grubunda
üst keserlerde önemli intrüzyon gözlemlenirken, mini-implant grubunda posterior
dişlerin ekstüzyonu önemli bulundu ve bu değerler bakımından gruplar arasındaki
farklar da önem çıktı (p<0.05). T3’de saptanan overbite miktarındaki
azalmalar her iki grupta da önemli bulunurken (p<0.05), gruplar arsındaki
fark önemsizdi (p>0.05).  Klinik
olarak önemli relaps oranları mini-implant ve çekim gruplarında sırası ile
%7.14 (1 kişi) ve %14.28 (2 kişi) olarak belirlendi.

Sonuç: Mini-implantlarla intrüzyon ve çekimli
tedaviler farklı yollarla açık kapanışın tedavinde başarılı olsa da, her iki
grubun takip sürecinde relaps eğilimleri benzer bulunmuştur.

Anahtar
Kelimeler: açık
kapanış, diş çekimi, diş gömülmesi

Keywords

open bite, tooth extraction

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