Effect of dental material fluorescence on DIAGNOdent readings

Hitij, Tomaž; Fidler, Aleš

doi:10.1080/00016350701810641

Cited by 25 publications

(17 citation statements)

References 17 publications

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“…This recommendation is in line with earlier findings, that unpolished filling materials can lead to false positive LF signals, while the same materials are below dentine caries detection threshold after polishing. 33 Karlsson found a very weak correlation (Spearman r not exceeding 0.31) between LF readings (old LF device DIAGNOdent 2095) and lesion depth of primary root caries lesions with and without cavitation. 22 However, the teeth that were used in their study were not stored frozen but stored in thymolized saline, and a significant drop of fluorescence signals could be anticipated.…”

Section: Discussionmentioning

confidence: 97%

Detection of proximal secondary caries at cervical class II-amalgam restoration margins in vitro

Neuhaus

Rodrigues

Seemann

et al. 2012

Journal of Dentistry

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Section: Discussionmentioning

confidence: 97%

Detection of proximal secondary caries at cervical class II-amalgam restoration margins in vitro

Neuhaus

Rodrigues

Seemann

et al. 2012

Journal of Dentistry

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“…The increased fluorescence could have been due to resin tags on the enamel surface. Elevated DIAGNOdent readings have been shown 28,29 to occur adjacent to composite resins; micromechanical interlocking of the dental sealant and enamel rods projects 25 mm to 50 mm into the etched surface. 5,30 It is also possible that some demineralization of the sealed enamel surface actually occurred.…”

Section: Discussionmentioning

confidence: 99%

Determinants of enamel decalcification during simulated orthodontic treatment

Hess

Campbell

Honeyman

et al. 2011

The Angle Orthodontist

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Objective: To determine the relative effects that phosphoric acid etching, metal brackets, composite resin adhesives, and filled resin sealants have on enamel decalcification. Materials and Methods: One hundred and fifty teeth were randomly divided into six groups to test the effects of acid etching, brackets, and a composite resin adhesive. The right side of each tooth was sealed. The teeth were submitted to a simulated carious challenge by Streptococcus mutans in a nutritive media for 42 days. Scanning electron photomicrographs (SEMs) were used to qualitatively evaluate the tooth surfaces. DIAGNOdent laser fluorescence was used to quantify the decalcification changes that occurred. Results: SEMs showed normal enamel on the control teeth, etching patterns on the acid-etched teeth, surface degradation on the teeth that had resin, and sealant tags on the sealed side. The untreated control group showed significantly less decalcification (P # .05) than did all groups except the no etch+bracket group. The no etch+bracket group showed significantly less decalcification than did the etch+bracket, no etch+resin, and the etch+resin groups. Acid-etched teeth demonstrated significantly more decalcification (34%) than did those that were not etched. The teeth with resin showed significantly more decalcification (24%) than did those without resin. There was no significant difference between teeth that did and did not have brackets. The unsealed side of the teeth showed small amounts of-but significantly more-decalcification (5%) compared to the sealed side. Conclusions: Acid etching and composite resin adhesives increase enamel decalcification in vitro, while brackets do not. Filled resin sealants protect the teeth from decalcification. (Angle Orthod. 2011;81:836-842.)

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“…This finding is in accordance with previous studies which concluded that fluorescence level of the teeth decrease or remain stable during the bleaching process, and DIAGNOdent as a caries measurement device would bring unreliable values for recent bleached teeth. [36][37][38] However, an additional measurement of DD values, after bleaching and prior to pH cycling could better illustrate the precise effect of bleaching on DD values. Further studies are needed to clarify the clinical relevance of the findings of this invitro study.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Effect of Different Laser Activated Bleaching Methods on Enamel Susceptibility to Caries; An In Vitro Mode

Ashnagar¹,

Monzavi

Abbasi

et al. 2017

J Lasers Med Sci

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IntroductionIn recent years, tooth whitening has become one of the most growing oral care sectors, boosted by patients, demanding both healthy mouth and attractive smile.1 As tooth color relies on the composition of tooth tissues, any chemical, mechanical or biological change can damage the esthetic equilibrium of the smile.2 Bleaching is a simple, non-restorative and noninvasive treatment for discolored teeth that is capable of satisfaction of the high demanding patients. So it has attracted much interest from the profession. Bleaching systems today are based on hydrogen peroxide as the active agent and are often activated by heat or light.3 Hydrogen peroxide acts as a strong oxidizing agent through the formation of free radicals and reactive molecules which attack dark colored macromolecules and break them into smaller and less colored ones. 4 Although other products such as carbamide peroxide or sodium perborate are available for bleaching, hydrogen peroxide is still considered to be the most effective and popular agent, since it is available in a range of formulations, concentrations and activation modes. In-office bleaching can provide significant brightness after only one session of treatment, but achievement of optimum results may require multiple sessions or longer time of application of the bleaching agents. 6,7 However, this may increase the risk of tooth sensitivity 8 and cause certain amount of enamel matrix degradation. 9Acceleration of hydrogen peroxide decomposition can be carried out through energy absorption from external source of energy like heat or laser, providing better patient compliance and may eradicate the side effects of high concentrated hydrogen peroxide.10,11 Because of tooth temperature concerns, lasers are now more preferred. Lasers such as diode (LED), halogen, Nd:YAG etc can be highlighted. Abstract Introduction: Today, bleaching is a routine noninvasive alternative for treatment of discolored teeth. The aim of this study was to determine whether conventional or laser activated bleaching predispose teeth to develop caries or not. Methods: Sixty human molars were mounted on acrylic cylinders and their Knoop microhardness (KHN) as well as DIAGNOdent (DD) values were recorded. They were divided into 4 experimental groups; G1) conventional bleaching with 40% hydrogen peroxide gel, G2) Diode laser assisted bleaching with same gel, G3) Nd:YAG laser assisted bleaching with the same gel, G4) control group. After bleaching, all samples were subjected to a three day pH cycling regimen and then, KHN and DD values were measured. Results: All groups had significant reduction in KHN values. It seems that there is no statistically meaningful difference between changes in enamel microhardness of the sample groups and all groups have changed in a similar amount. Reduction of DD scores were significant in Diode laser and conventional groups, however changes in Nd:YAG laser and control groups were not significant. Changes in DD values have followed a similar pattern among groups, except in G1-G4 a...

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Effect of dental material fluorescence on DIAGNOdent readings

Abstract: Stained dental materials might affect DIAGNOdent readings and consequently result in false-positive diagnoses of secondary caries. Dental fillings should be polished prior to DIAGNOdent measurement.

Cited by 25 publications

References 17 publications

Detection of proximal secondary caries at cervical class II-amalgam restoration margins in vitro

Detection of proximal secondary caries at cervical class II-amalgam restoration margins in vitro

Determinants of enamel decalcification during simulated orthodontic treatment

Evaluation of the Effect of Different Laser Activated Bleaching Methods on Enamel Susceptibility to Caries; An In Vitro Mode

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