Assessing the effect of multibracket appliance treatment on tooth color by using electronic measurement

Anja Ratzmann,Anja Treichel,Andreas Faltermeier,Alexander Welk,Christan Schwahn

doi:10.1186/s13005-018-0174-4

Anja Ratzmann, Anja Treichel + Show 3 more

Open Access

https://doi.org/10.1186/s13005-018-0174-4

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Abstract

BackgroundThe purpose of this study was to investigate how tooth color is affected by multibracket appliance (MBA) treatment.MethodsThe color of teeth #14 to #24 of 15 patients with MBA was measured on body and gingival tooth segments using the spectrophotometer Shade Inspector™. Colors of both segments were recorded before start of MBA treatment (baseline T0), end of MBA treatment (T1; 2 years ±0.3), and 3 months after T1 (T2). A 2D color system and a 3D system served as reference systems.Multilevel models were used to analyze color change within segments and to compare the difference in color change between segments (treatment effect).Results2D system. Changes within tooth segments from T0 to T2 were at worst 2.0 units (ΔE in the gingival segment), which is less than the threshold of 2.7 units for a clinically meaningful difference. Confidence intervals for the treatment effect indicated no clinically important differences in color change between body and gingival segments.3D system. Changes within tooth segments from T0 to T2 were at worst 2.3 units (ΔE in the body segment), which is less than the threshold of 2.7 units for a clinically meaningful difference. Confidence intervals for the treatment effect indicated no clinically important differences in color change between body and gingival segments.Thus, MBA treatment did not lead to clinically relevant changes in tooth color.ConclusionWithin the limitation of this study the MBA treatment can be seen as a safe method with respect to tooth color.

Highlights

The purpose of this study was to investigate how tooth color is affected by multibracket appliance (MBA) treatment
The purpose of this in vivo study was to investigate how tooth color is affected by multibracket appliance (MBA) treatment, especially whether: (1) the change in tooth color during multibracket treatment (MBA) treatment is clinically important; (2) the color change differs by bracket and Ratzmann et al Head & Face Medicine (2018) 14:22 non-bracket tooth segments; and (3) the change is substantially the same for the conventionally used 2D system and the scientifically favorable 3D system
Changes within segments S1 and S2 from baseline to 3 months after MBA treatment (T0 – T2) were at worst 1.97 ≈ 2.0 units (ΔE for gingival segment; Table 2), which is less than the threshold of 2.7 units for a clinical meaningful difference (Fig. 6a)

Summary

Introduction

The purpose of this study was to investigate how tooth color is affected by multibracket appliance (MBA) treatment. Changes in tooth color may be caused by several factors, for instance, by extrinsic (external) and intrinsic (internal) discolorations, or by aging [1]. Multibracket treatment (MBA) may be Association between tooth color changes due to bonding and debonding procedure and multibracket treatment (MBA) is discussed controversial. Some studies [4, 10, 11] have shown that enamel color variables were significantly affected by bonding and debonding procedures, other investigations [3, 12,13,14] did not find clinically important influence of this procedures on the enamel discolorations

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