Universidade Federal de Santa Catarina, Departamento de Odontologia, Florianópolis, Santa Catarina, Brasil.
Universidade Federal de Santa Catarina, Departamento de Informática e Estatística, Florianópolis, Santa Catarina, Brasil.
J Appl Oral Sci. 2017 Mar-Apr;25(2):234-242. doi: 10.1590/1678-77572016-0398.
To assess tooth crown's color after intracanal treatment with triple antibiotic paste (TAP) or calcium hydroxide (CH); cervical sealing with glass ionomer cement (GIC) or mineral trioxide aggregate (MTA); and bleaching with carbamide peroxide.
After pulp removal and color spectrophotometer measurement, 50 bovine incisors were divided into 4 experimental groups and one control (untreated). Experiments were performed in phases (Ph). Ph1: TAP (ciprofloxacin, metronidazole, minocycline), TAPM (ciprofloxacin, metronidazole, amoxicillin), DAP (ciprofloxacin, metronidazole), or CH treatment groups. After 1 and 3 days (d); 1, 2, 3 weeks (w); and 1, 2, 3 and 4 months (m), color was measured and medications were removed. Ph2: GIC or MTA cervical sealing, each using half of the specimens from each group. Color was assessed after 1d, 3d; 1w, 2w, 3w; 1m and 2m. Ph3: Two bleaching sessions, each followed by color measurement. Data were analyzed with ANOVA and post-hoc Holm-Sidak method.
Ph1: Specimens of TAP group presented higher color alteration (ΔE) mean than those of TAPM group. No significant difference was found among TAP or TAPM and CH, DAP or Control groups. Ph2: cervical sealing materials showed no influence on color alteration. Ph3: Different ΔE means (from different groups), prior to bleaching, became equivalent after one bleaching session.
TAP induces higher color alteration than TAPM; color alteration increases over time; cervical sealing material has no influence on color alteration; and, dental bleaching was able to recover, at least partially, the tooth crown's color.
评估使用三抗生素糊剂（TAP）或氢氧化钙（CH）进行根管内治疗后牙冠的颜色；使用玻璃离子水门汀（GIC）或矿物三氧化物聚合体（MTA）进行颈部密封；以及使用过氧化脲进行漂白。
在牙髓去除和比色分光光度计测量后，将 50 颗牛切牙分为 4 个实验组和 1 个对照组（未处理）。实验分阶段进行（Ph）。Ph1：TAP（环丙沙星、甲硝唑、米诺环素）、TAPM（环丙沙星、甲硝唑、阿莫西林）、DAP（环丙沙星、甲硝唑）或 CH 处理组。第 1 天和第 3 天（d）；第 1、2、3 周（w）；第 1、2、3 和 4 个月（m）后测量颜色，并清除药物。Ph2：GIC 或 MTA 颈部密封，每组使用一半标本。第 1 天、第 3 天；第 1 周、第 2 周、第 3 周；第 1 个月和第 2 个月后评估颜色。Ph3：两次漂白疗程，每次后都进行颜色测量。使用方差分析和事后 Holm-Sidak 方法分析数据。
Ph1：TAP 组的标本呈现出比 TAPM 组更高的颜色变化（ΔE）均值。TAP 或 TAPM 与 CH、DAP 或对照组之间没有发现显著差异。Ph2：颈部密封材料对颜色变化没有影响。Ph3：在漂白之前，不同组的不同 ΔE 均值在一次漂白疗程后变得相等。
TAP 引起的颜色变化比 TAPM 高；颜色变化随时间增加；颈部密封材料对颜色变化没有影响；牙齿漂白至少可以部分恢复牙冠的颜色。
