A randomised controlled trial to investigate the effects of dehydration on tooth colour

Burki, Zulaikha; Watkins, Sophie; Wilson, R.F.; Fenlon, Michael R.

doi:10.1016/j.jdent.2012.11.009

Cited by 54 publications

(81 citation statements)

References 23 publications

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“…At a dehydrated enamel-air interface, the refractive and scattering indices are different from those of enamel-water interface. Dehydrated enamel would show lower translucency causing more reflection, thus masking the underlying dentine shade, leading to a lighter appearance 8 . In this study, to reduce the effect of water loss during procedures, the time for rehydration was established in 24 h prior to color measurements.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, to reduce the effect of water loss during procedures, the time for rehydration was established in 24 h prior to color measurements. Even being careful to remove just the excessive moisture from the external dental surface and short manipulation time (±1 minute) to take color shade, some color alteration was expected 8,25 , since the major color change in dehydrated teeth occur in the first 10 minutes 8 .…”

Section: Discussionmentioning

confidence: 99%

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Crown discoloration promoted by materials used in regenerative endodontic procedures and effect of dental bleaching: spectrophotometric analysis

et al. 2017

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Regenerative endodontic procedure (REP) has been proposed as a new approach to treat immature permanent teeth. However, materials used in REP for root canal disinfection or cervical sealing may induce tooth discoloration. Objectives 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.Material and Methods 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.Results 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.Conclusions 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.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Crown discoloration promoted by materials used in regenerative endodontic procedures and effect of dental bleaching: spectrophotometric analysis

et al. 2017

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“…After allowing rehydration to occur for thirty minutes, the lightness characteristics were still not restored. These results were similar across all anatomical areas of the tooth (cervical, middle and incisal) and were both visually apparent and quantifiable (27).…”

Section: Sources Of Variationsupporting

confidence: 63%

“…Changes in all of the color parameters occurred after only ten minutes. At the sixty-minute mark, all the parameters were notably different, with the exception of value (27). After allowing rehydration to occur for thirty minutes, the lightness characteristics were still not restored.…”

Section: Sources Of Variationmentioning

confidence: 94%

“…Future studies would also need to include the relative amount of time the patient was in the dental chair before the prescription shade was assessed. The shade of the teeth is highly sensitive to dehydration that frequently occurs while sitting in the dental chair with the mouth open (27). Without this information, the investigators cannot rule out oral dehydration as a factor in ∆E !…”

Section: Strengths and Limitationsmentioning

confidence: 99%

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