Journal of dental research, dental clinics, dental prospects · 2025
Comparison of dental effects of traditional and clear twin block: A randomized clinical trial.
СтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Behroozian Ahmad, Pourahmad Anahita, Zali Mahsa, Zandesh Amir
Аннотация
BACKGROUND: Growth modification is a strategy for the treatment of skeletal Cl II patients. Clear twin block (CTB) is a modification of traditional twin block (TTB), which is made from thermoplastic sheets instead of acrylic resin and wire. This study compared the dental effects of the clear and TTBs.
METHODS: In this randomized clinical trial, 60 growing skeletal Cl II patients with dental Cl II div 1 malocclusion were selected and randomly divided into two groups: TTB and CTB. Cephalometric radiography and stone models were taken before treatment (T1) and six months (T2) after appliance insertion. Data were analyzed using independent t-test and paired t-test at the 0.05 significance level.
RESULTS: There was a significant difference between CTB and TTB in IMPA at T2 (P<0.05). Intragroup comparisons showed no significant change from T1 to T2 in the CTB group and for U1-SN and U1-Pal amounts in the TTB group. T1-T2 comparison showed a significant change in IMPA in the TTB group (P<0.05).
CONCLUSION: TTB showed more protrusion of lower incisors compared to CTB.
METHODS: In this randomized clinical trial, 60 growing skeletal Cl II patients with dental Cl II div 1 malocclusion were selected and randomly divided into two groups: TTB and CTB. Cephalometric radiography and stone models were taken before treatment (T1) and six months (T2) after appliance insertion. Data were analyzed using independent t-test and paired t-test at the 0.05 significance level.
RESULTS: There was a significant difference between CTB and TTB in IMPA at T2 (P<0.05). Intragroup comparisons showed no significant change from T1 to T2 in the CTB group and for U1-SN and U1-Pal amounts in the TTB group. T1-T2 comparison showed a significant change in IMPA in the TTB group (P<0.05).
CONCLUSION: TTB showed more protrusion of lower incisors compared to CTB.