Singal Pankaj, Gupta Rajan, Pandit Nymphea
D.A.V. (C) Dental College, Periodontics, Yamuna Nagar, Haryana, India.
J Periodontol. 2005 Mar;76(3):351-7. doi: 10.1902/jop.2005.76.3.351.
Dentin hypersensitivity is a common clinical condition and age-old complaint, presenting problems to both the patient and the dentist. Besides causing discomfort, the condition may deter a person from establishing or maintaining adequate oral hygiene procedures, further complicating oral health. The failure to practice satisfactory plaque control has well-established consequences on gingival and periodontal health. Thus, a cycle of sensitive teeth leading to reduced plaque control, more periodontal disease, and more recession may be established.
The hypersensitive teeth were identified by the patient and verified by the light stroke of a dental explorer along the cervical area of all teeth present. Subjects fulfilling the inclusion and exclusion criteria were evaluated using tactile, 1-second air blast, and cold water stimuli, and the subject's response was recorded on the verbal rating scale. A total of 425 teeth from 50 patients included in this study were randomly divided into two groups: group 1, who received 2% sodium fluoride-iontophoresis (NaF) and group 2, who received an aqueous solution of hydroxy-ethyl-methacrylate and glutaraldehyde (HEMA-G). The teeth were evaluated immediately after treatment and at 2 weeks, 1 month, and 3 months. In case of failure at the 2-week interval, the affected tooth was retreated with the same drug as before and evaluated further.
The results were statistically analyzed, and it was found that group 1 treatment was more effective than group 2 at 1- and 3-month intervals. There was a comparatively greater recurrence of hypersensitivity in group 2. A comparable number of teeth required repeat dosage in both groups. Teeth which required repeat dosage had greater mean discomfort scores at baseline for all three tests than the teeth which did not require a repeat dose.
Both agents showed significant reduction in sensitivity at all time intervals compared to baseline; however, NaF had a comparatively greater effect than HEMA-G at both the 1- and 3-month intervals; an almost equal number of teeth in both groups required repeat doses. Teeth with a higher initial sensitivity score required a repeat dose. Both agents were found to be equally effective immediately after application; the 2% NaF was comparatively better than HEMA-G in providing long-term relief.
牙本质过敏是一种常见的临床病症，也是由来已久的主诉，给患者和牙医都带来了问题。除了引起不适外，这种情况可能会使一个人无法建立或维持适当的口腔卫生程序，进而使口腔健康状况更加复杂。未能有效控制牙菌斑对牙龈和牙周健康会产生公认的后果。因此，可能会形成一个由牙齿敏感导致牙菌斑控制减少、更多牙周疾病和更多牙龈退缩的循环。
由患者识别出敏感牙齿，并通过牙科探针沿所有现存牙齿的颈部区域轻轻划过进行验证。符合纳入和排除标准的受试者接受触觉、1秒气喷和冷水刺激评估，并将受试者的反应记录在语言评定量表上。本研究纳入的50名患者的总共425颗牙齿被随机分为两组：第1组接受2%氟化钠离子导入（NaF），第2组接受甲基丙烯酸羟乙酯和戊二醛水溶液（HEMA-G）。治疗后立即以及在2周、1个月和3个月时对牙齿进行评估。如果在2周间隔时治疗失败，对受影响的牙齿用与之前相同的药物再次治疗并进一步评估。
对结果进行统计学分析，发现第1组治疗在1个月和3个月间隔时比第2组更有效。第2组过敏反应的复发率相对较高。两组中需要重复给药的牙齿数量相当。需要重复给药的牙齿在所有三项测试的基线时的平均不适评分均高于不需要重复给药的牙齿。
与基线相比，两种药物在所有时间间隔的敏感性均显著降低；然而，在1个月和3个月间隔时，NaF的效果相对比HEMA-G更好；两组中几乎相等数量的牙齿需要重复给药。初始敏感性评分较高的牙齿需要重复给药。两种药物在应用后立即显示出同等效果；2% NaF在提供长期缓解方面相对比HEMA-G更好。
