Journal of Scientific Dentistry
Volume 9 | Issue 1 | Year 2019

Precise Lighting for Shade Matching

Ravichandran Varsha1, Shivasakthy Manivasakan2, David W Livingstone3, Albert Jenie Rosna4

1Department of Prosthodontics, Indira Gandhi Institute of Dental Sciences, Salem, Tamil Nadu, India
2,3Department of Prosthodontics and Crown and Bridge, Indira Gandhi Institute of Dental Sciences, Sri Balaji Vidyapeeth (a Deemed University), Pillayarkuppam, Puducherry, India
4Department of Prosthodontics, Indira Gandhi institute of Dental Sciences, Madurai, Tamil Nadu, India

Corresponding Author: Ravichandran Varsha, Department of Prosthodontics, Indira Gandhi Institute of Dental Sciences, Salem, Tamil Nadu, India, Phone: +91 9047049915, e-mail:

How to cite this article Varsha R, Manivasakan S, Livingstone DW, Rosna AJ. Precise Lighting for Shade Matching. J Sci Dent 2019;9(1):30–31.

Source of support: Nil

Conflict of interest: None


A rite-lite 2-shade matching unit with HI-CRI (high color rendering index) LEDs is used to reproduce the visual spectrum as produced by natural sunlight. The diffused LED technology in this device aids in matching the shade for teeth and dental restorations with the simulation of various lighting conditions.


Fig. 1: Rite Lite 2 shade matching unit

Fig. 2: Neutralizing colour tabs

Fig. 3: Polarizing filter



Rite Lite 2 (Fig. 1) offers the choice between three simulated lighting conditions (daylight, incandescent, and ambient light) and it is easy to toggle between the three lighting conditions with a one-touch control. It reduces glare and reflective highlights and eliminates shadowing from the upper lip; it distracts outside colour sources and colour distraction in oral cavity from interfering with shade selection. When neutralizing color tabs (Fig. 2) are placed behind the teeth, they eliminate colour distraction in the oral cavity. It is powered by two AA batteries and the LED provides 30,000 hours of life with a constant light output and a low battery indicator.


This device has an accessory polarizing filter (Fig. 3) that can be attached. The polarizing filter is used to eliminate reflection and provides an enhanced visualization of tooth color, the internal details, individual characterization, and depth and transparency of the shade.


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