{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T09:18:32Z","timestamp":1787735912557,"version":"build-2784847793"},"reference-count":27,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dent. J.","Dentistry Journal"],"abstract":"<jats:p>Background\/Objectives: Human teeth naturally fluoresce due primarily to organic components within dentine, contributing to their vitality and appearance under ultraviolet (UV) light. Contemporary resin composites increasingly incorporate fluorescent agents to reproduce this property and improve aesthetic integration with natural dentition. This narrative review examines the fluorescence characteristics of natural teeth and direct resin composites, evaluates methods used to assess dental fluorescence, and identifies factors influencing fluorescence stability and biomimetic performance. Methods: Peer-reviewed studies published between 2004 and 2025 investigating fluorescence in human teeth and direct resin-based composites under UV, visible or infrared illumination were reviewed. Studies focused on indirect restorative materials, non-human specimens or caries detection alone were excluded. Results: Natural teeth generally exhibit fluorescence emission peaks between 410 and 500 nm, with dentine demonstrating greater fluorescence intensity than enamel. Composite resins commonly incorporate rare-earth oxide fluorophores and often display similar emission wavelengths (approximately 450\u2013485 nm), although fluorescence intensity varies considerably among brands and shades. Material fluorescence is influenced by composition, aging and environmental exposure. Spectrofluorometry provides highly accurate quantitative assessment, whereas photographic and quantitative light-induced fluorescence (QLF) methods offer greater clinical applicability. Despite advances in fluorescence mimicry, variability among contemporary materials generally continues to permit differentiation from natural tooth. Conclusions: Although substantial progress has been made in reproducing natural tooth fluorescence, significant variability and temporal instability remain among contemporary composite materials. Fluorescence-based methods therefore remain useful for restoration identification. However, continued improvements in biomimetic performance may reduce their future effectiveness. Greater standardisation of fluorescence assessment and investigation of alternative detection approaches are needed to support clinical and forensic applications.<\/jats:p>","DOI":"10.3390\/dj14090535","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T08:11:15Z","timestamp":1787731875000},"page":"535","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fluorescence in Direct Dental Resin-Based Composites and Natural Teeth: A Narrative Review"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6465-3607","authenticated-orcid":false,"given":"Thomas","family":"Corfield","sequence":"first","affiliation":[{"name":"School of Dentistry, Adelaide University, Adelaide, SA 5000, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7780-243X","authenticated-orcid":false,"given":"Denice","family":"Higgins","sequence":"additional","affiliation":[{"name":"Forensic Odontology Unit, Adelaide University, Adelaide, SA 5000, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1111\/jerd.12421","article-title":"Fluorescence of natural teeth and restorative materials, methods for analysis and quantification: A literature review","volume":"30","author":"Volpato","year":"2018","journal-title":"J. Esthet. Restor. Dent."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"653","DOI":"10.1016\/j.dental.2005.08.004","article-title":"Changes in opalescence and fluorescence properties of resin composites after accelerated aging","volume":"22","author":"Lee","year":"2006","journal-title":"Dent. Mater."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"189","DOI":"10.2341\/07-74","article-title":"Fluorescence intensity of resin composites and dental tissues before and after accelerated aging: A comparative study","volume":"33","author":"Takahashi","year":"2008","journal-title":"Oper. Dent."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1055\/s-0043-1772244","article-title":"Fluorescence of Esthetic Resin Composites: Spectrophotometry and Photography Analysis Techniques","volume":"18","author":"Cruz","year":"2024","journal-title":"Eur. J. Dent."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"754","DOI":"10.4012\/dmj.2014-219","article-title":"Fluorescence of composite resins: A comparison among properties of commercial shades","volume":"34","author":"Meller","year":"2015","journal-title":"Dent. Mater. J."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.pdpdt.2016.01.005","article-title":"Differences in the intensity of light-induced fluorescence emitted by resin composites","volume":"13","author":"Kim","year":"2016","journal-title":"Photodiagnosis Photodyn. Ther."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"720","DOI":"10.1111\/jerd.12729","article-title":"How well can today\u2019s tooth-colored dental restorative materials reproduce the autofluorescence of human teeth?\u2013Ambition and reality!","volume":"33","author":"Klein","year":"2021","journal-title":"J. Esthet. Restor. Dent."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"e20","DOI":"10.1016\/j.dental.2012.11.007","article-title":"Investigation of the physical properties of tricalcium silicate cement-based root-end filling materials","volume":"29","author":"Grech","year":"2013","journal-title":"Dent. Mater."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1111\/j.1708-8240.2007.00100.x","article-title":"Evaluation of fluorescence of dental composites using contrast ratios to adjacent tooth structure: A pilot study","volume":"19","author":"Casemiro","year":"2007","journal-title":"J. Esthet. Restor. Dent."},{"key":"ref_10","first-page":"66","article-title":"A new methodology for fluorescence analysis of composite resins used in anterior direct restorations","volume":"63","author":"Abreu","year":"2015","journal-title":"Gen. Dent."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"916","DOI":"10.4012\/dmj.2012-079","article-title":"Fluorescence properties of commercial composite resin restorative materials in dentistry","volume":"31","author":"Meller","year":"2012","journal-title":"Dent. Mater. J."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"407","DOI":"10.2341\/12-464-L","article-title":"Direct spectrometry: A new alternative for measuring the fluorescence of composite resins and dental tissues","volume":"39","author":"Severino","year":"2014","journal-title":"Oper. Dent."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"e461","DOI":"10.4317\/jced.56535","article-title":"In vitro evaluation of composite resin fluorescence after natural aging","volume":"12","author":"Garrido","year":"2020","journal-title":"J. Clin. Exp. Dent."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"615","DOI":"10.1007\/s10266-020-00583-z","article-title":"Fluorescence intensities of composite resins on photo images","volume":"109","author":"Brokos","year":"2021","journal-title":"Odontology"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"408","DOI":"10.1111\/j.1556-4029.2008.00657.x","article-title":"Ultraviolet illumination as an adjunctive aid in dental inspection","volume":"53","author":"Hermanson","year":"2008","journal-title":"J. Forensic Sci."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.forsciint.2013.05.001","article-title":"Dental fluorescence: Potential forensic use","volume":"231","author":"Melo","year":"2013","journal-title":"Forensic Sci. Int."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.forsciint.2017.01.022","article-title":"Forensic applications: Fluorescence properties of tooth-coloured restorative materials using a fluorescence DSLR camera","volume":"273","author":"Kiran","year":"2017","journal-title":"Forensic Sci. Int."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"569","DOI":"10.4012\/dmj.22.569","article-title":"Discrimination between Composite Resin and Teeth using Fluorescence Properties","volume":"22","author":"Tani","year":"2003","journal-title":"Dent. Mater. J."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"5189","DOI":"10.1007\/s00784-021-03826-7","article-title":"Accuracy of the fluorescence-aided identification technique (FIT) for detecting tooth-colored restorations utilizing different fluorescence-inducing devices: An ex vivo comparative study","volume":"25","author":"Leontiev","year":"2021","journal-title":"Clin. Oral Investig."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"104223","DOI":"10.1016\/j.jmbbm.2020.104223","article-title":"In vitro and In vivo evaluation of resin composites fluorescence","volume":"114","author":"Lopes","year":"2021","journal-title":"J. Mech. Behav. Biomed. Mater."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Ghaffari, S., Gulati, A., and Price, R.B. (2024). Opalescence and Fluorescence of 46 Resin-Based Composites Exposed to Ultraviolet Light. Materials, 17.","DOI":"10.3390\/ma17194843"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1111\/j.1708-8240.2005.tb00092.x","article-title":"Fluorescence of layered resin composites","volume":"17","author":"Lee","year":"2005","journal-title":"J. Esthet. Restor. Dent."},{"key":"ref_23","first-page":"1","article-title":"In Vitro Evaluation of Fluorescence Stability of Different Composites and Dental Tissues Before and After Accelerated Aging","volume":"3","author":"Mualla","year":"2015","journal-title":"J. Med. Dent. Sci. Res."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"352","DOI":"10.5005\/jp-journals-10024-2045","article-title":"Staining Beverages and Cigarette Smoke on Composite Resin and Human Tooth Fluorescence by Direct Spectrometry","volume":"18","author":"Alves","year":"2017","journal-title":"J. Contemp. Dent. Pract."},{"key":"ref_25","doi-asserted-by":"crossref","unstructured":"Trivedi, S., Khandelwal, S., Khanvilkar, U., Bhat, S.P., Bhardwaj, A., Pawar, A.M., Reda, R., Testarelli, L., and Di Nardo, D. (2025). A Comparative Analysis of Fluorescence Properties in Composite Restorative Materials: An In Vitro and In Vivo Study. J. Compos. Sci., 9.","DOI":"10.3390\/jcs9050236"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"122","DOI":"10.1017\/S143192761601271X","article-title":"Determining Optimal Fluorescent Agent Concentrations in Dental Adhesive Resins for Imaging the Tooth\/Restoration Interface","volume":"23","author":"Cebim","year":"2017","journal-title":"Microsc. Microanal."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"375","DOI":"10.1016\/S0022-3913(07)60026-2","article-title":"Influence of the changes in the UV component of illumination on the color of composite resins","volume":"97","author":"Lee","year":"2007","journal-title":"J. Prosthet. Dent."}],"container-title":["Dentistry Journal"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2304-6767\/14\/9\/535\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T08:32:22Z","timestamp":1787733142000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2304-6767\/14\/9\/535"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,26]]},"references-count":27,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2026,9]]}},"alternative-id":["dj14090535"],"URL":"https:\/\/doi.org\/10.3390\/dj14090535","relation":{},"ISSN":["2304-6767"],"issn-type":[{"value":"2304-6767","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,26]]}}}