Department of Operative Dentistry, University of North Carolina School of Dentistry, Chapel Hill, NC, USA.
J Esthet Restor Dent. 2012 Jun;24(3):211-9. doi: 10.1111/j.1708-8240.2011.00479.x. Epub 2011 Oct 11.
The long-term patient satisfaction and safety of nightguard vital bleaching (NGVB) requires further evaluation.
The purpose of this study was to evaluate patients' satisfaction and identify side effects of NGVB up to 17 years post-treatment.
Thirty-one participants who had completed previous NGVB studies using 10% carbamide peroxide were contacted at least 10 years post-treatment (range 10-17 years, average 12.3 years). Participants reported shade satisfaction (very satisfied [VS], partially satisfied [PS], or not satisfied [NS]) as well as potential complications. Participants had teeth # 6 to 11 examined for tooth vitality, gingival inflammation (Löe's Gingival Index [GI]), and radiographically for external cervical resorption (ECR).
All of the participants had successful lightening of their teeth. Sixty-one percent (19) had not retreated their teeth. Of those who had not retreated their teeth and who responded to the question of whitening satisfaction, 31% (4/13) were VS, 54% (7/13) were PS, and 15% (2/13) were NS with their current shade. Of those who had retreated their teeth, all were VS or PS. Ninety-one percent of the examined teeth had GI = 0 (normal), 7% had GI = 1 (mild inflammation), and 2% had GI = 2 (moderate inflammation). Sixty-nine percent of teeth tested responded to a cold stimulus. Radiographs did not detect ECR or apical lesions. No participant reported having a gingival biopsy post-treatment, and 87% would whiten again.
Patient satisfaction with NGVB may last as long as 12.3 years in average (range 10-17 years) post-treatment. GI and ECR findings were considered within the normal expectations for the sample studied, suggesting minimal clinical post-NGVB side effects up to 17 years.
Nightguard vital bleaching provides patient satisfaction with minimal side effects up to 17 years post-treatment.
夜间防护性活髓牙齿漂白（nightguard vital bleaching，NGVB）的长期患者满意度和安全性仍需进一步评估。
本研究旨在评估患者的满意度，并确定 NGVB 治疗后长达 17 年的副作用。
联系了 31 名完成了之前使用 10%过氧脲素进行 NGVB 研究的参与者，治疗后时间至少为 10 年（范围 10-17 年，平均 12.3 年）。参与者报告了遮色满意度（非常满意[VS]、部分满意[PS]或不满意[NS]）以及潜在的并发症。对牙齿 #6 至 #11 进行了牙髓活力检查、牙龈炎症（Löe 牙龈指数[GI]）和放射线检查，以评估外部颈侧吸收（ECR）。
所有参与者的牙齿都成功变亮。61%（19 人）没有再进行牙齿漂白。在没有再进行牙齿漂白且回答了牙齿漂白满意度问题的参与者中，31%（4/13）为 VS，54%（7/13）为 PS，15%（2/13）对目前的遮色效果不满意。在那些进行了牙齿漂白的参与者中，所有人均为 VS 或 PS。91%的检查牙齿的 GI=0（正常），7%的 GI=1（轻度炎症），2%的 GI=2（中度炎症）。69%的牙齿对冷刺激有反应。放射线检查未发现 ECR 或根尖病变。没有参与者报告治疗后进行过牙龈活检，87%的人会再次进行牙齿漂白。
NGVB 治疗后 12.3 年（10-17 年）内，患者的满意度可能持续存在。GI 和 ECR 的发现被认为在研究样本的正常预期范围内，表明 NGVB 治疗后长达 17 年的时间内，临床副作用最小。
夜间防护性活髓牙齿漂白可提供患者满意度，且副作用最小，治疗后长达 17 年。
