The evaluation of clinical efficacy and longevity of home bleaching without combined application of In-office bleaching

Article information

Restor Dent Endod. 2010;35(5):387-394

Publication date (electronic) : 2010 September 30

doi : https://doi.org/10.5395/JKACD.2010.35.5.387

Byunk-Gyu Shin, DDS, MD ¹, Sung-Eun Yang, DDS, PhD ²

¹Department of Prosthodontics, Graduate School of Clinical Dental Science, Catholic University, Seoul, Korea.

²Department of Conservative Dentistry, Seoul St. Mary's Hospital, Catholic University, Seoul, Korea.

Correspondence to Sung-Eun Yang, DDS, PhD. Professor, Department of Conservative Dentistry, Seoul St. Mary's Hospital, Catholic University, 505, Banpo-dong, Seocho-gu, Seoul, Korea 135-720. Tel, +82-2-2258-6296; Fax, +82-2-537-2374; dentyeun@catholic.ac.kr

Received 2010 June 17; Revised 2010 July 22; Accepted 2010 September 08.

Abstract

Objectives

The purpose of this study was to evaluate the whitening efficacy and longevity of home bleaching.

Materials and Methods

A total of 28 patients were divided into either experimental group (Opalescence F; 15% carbamide peroxide) or control group randomly. The patients in experimental group were instructed to wear individual trays applied with bleaching gel for 2 hours a day for 4 weeks. Any treatments weren't applied to the patients in control group. The color measurements of central incisors, lateral incisors & canines of upper and lower arch were recorded at base line, immediately after the finishment of treatmemt (4 weeks), 8 weeks and 12 weeks using Colorimeter (Chroma Meter, 2600d Konica Minolta co.) and Vitapan classical shade guide (Vita Zahnfabrik).

Results

A significantly stronger color change was observed for overall teeth samples in experimental group immediately after treatment (at 4 weeks) compared to ones in control group (p < 0.05). There was also a significant difference between baseline and 8 weeks or 12 weeks separately though color rebouncing phenomenon occurred as time went by (p < 0.05).

Conclusions

The clinical effecacy and longevity of home bleaching without combined application of in-office bleaching was observed through this experiment.

Keywords: Colorimeter; Home bleaching; Longevity; Vita shade guide; Whitening efficacy

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