Ahmed Imtiaz, Nazir Rozina
Department of Orthodontics, Dr. Irshat-UI-Ebad Khan Institute of Oral Health Sciences, DOW University of Health Sciences, Karachi, Pakistan.
J Ayub Med Coll Abbottabad. 2011 Jan-Mar;23(1):55-7.
The most important aetiological factor of periodontal disease is plaque deposition around gingival margin. The aim of the study was to investigate the negative changes in periodontal health (increase in pocket depth) of first molars in fixed orthodontic treatment and to discuss the available options to avoid it.
Group A (6 month of treatment) comprised of 45 patients, compared to Group B (12 month of treatment) comprised of 45 patients. Initial pocket depth of first molars checked before placement of molar bands in both groups of patients, then for Group A patients pocket depth evaluated after 6 month of treatment and for Group B patients pocket depth evaluated after 12 month of treatment period.
In patients with 6 months of treatment the pocket depth of molars mostly falls between 1.5 and 2.0 mm. In some severe cases it exceeded 3 mm. In patients at 12 months of treatment pocket depth was greater than 6 month group and it mostly fell in the range of 2.0-2.5 mm.
Increase in pocket depth showed that plaque deposition leads to periodontal destruction around molar bands. Patient motivation to maintain oral hygiene and regular scaling will minimise hazardous effects.
牙周疾病最重要的病因是牙龈边缘菌斑的沉积。本研究的目的是调查固定正畸治疗中第一磨牙牙周健康的负面变化（牙周袋深度增加），并讨论避免这种情况的可行方法。
A组（治疗6个月）包括45名患者，B组（治疗12个月）包括45名患者。在两组患者放置磨牙带之前检查第一磨牙的初始牙周袋深度，然后对A组患者在治疗6个月后评估牙周袋深度，对B组患者在治疗12个月后评估牙周袋深度。
治疗6个月的患者中，磨牙的牙周袋深度大多在1.5至2.0毫米之间。在一些严重的病例中，该深度超过了3毫米。治疗12个月的患者牙周袋深度大于6个月组，大多在2.0 - 2.5毫米范围内。
牙周袋深度增加表明菌斑沉积会导致磨牙带周围的牙周破坏。患者保持口腔卫生的积极性和定期洗牙将使有害影响降至最低。
