Boyd R L, Baumrind S
Division of Orthodontics, School of Dentistry, University of California, San Francisco 94143-0640.
Angle Orthod. 1992 Summer;62(2):117-26. doi: 10.1043/0003-3219(1992)062<0117:PCITUO>2.0.CO;2.
This longitudinal study compared the periodontal status of bonded and banded molars in 20 adult and 40 adolescent patients before, during and after treatment with fixed orthodontic appliances. Plaque accumulation (measured by the Plaque Index), gingival inflammation (measured by the Gingival Index and the bleeding tendency), and pocket depth were assessed by one examiner at sites along the mesio-buccal line angle of the maxillary right first molar and the mandibular left first molar. Assessments were made immediately prior to the placement of fixed appliances (pretreatment), at 1, 3, 6, 9, 12 and 18 months after appliances were placed; and 3 months after appliances were removed (posttreatment). Loss of attachment between the pretreatment and posttreatment visits also was determined. At pretreatment, no significant differences were found in gingival inflammation between maxillary and mandibular banded and bonded molars. During treatment, both maxillary and mandibular banded molars showed significantly (p less than 0.05) greater gingival inflammation and plaque accumulation than did bonded molars. Three months after appliance removal, the maxillary molars that had been banded continued to show significantly more gingival inflammation and loss of attachment than did the maxillary molars that had been bonded. When all banded and bonded teeth were grouped by patient age, mean values for plaque accumulation and gingival inflammation in the maxillary molar regions were significantly greater for adolescents than for adults.
这项纵向研究比较了20名成年患者和40名青少年患者在使用固定正畸矫治器治疗前、治疗期间和治疗后的带环磨牙与粘结磨牙的牙周状况。由一名检查者在上颌右第一磨牙和下颌左第一磨牙的近中颊线角处的位点评估菌斑积聚（通过菌斑指数测量）、牙龈炎症（通过牙龈指数和出血倾向测量）以及牙周袋深度。在放置固定矫治器之前（治疗前）、放置矫治器后的1、3、6、9、12和18个月以及去除矫治器后3个月（治疗后）进行评估。还确定了治疗前和治疗后就诊之间附着丧失的情况。在治疗前，上颌和下颌带环磨牙与粘结磨牙之间在牙龈炎症方面未发现显著差异。在治疗期间，上颌和下颌带环磨牙均显示出比粘结磨牙明显（p小于0.05）更严重的牙龈炎症和菌斑积聚。去除矫治器3个月后，曾使用带环的上颌磨牙与曾使用粘结的上颌磨牙相比，继续显示出明显更多的牙龈炎症和附着丧失。当按患者年龄对所有带环和粘结牙齿进行分组时，青少年上颌磨牙区域的菌斑积聚和牙龈炎症平均值显著高于成年人。
