{"id":8197,"date":"2025-04-27T07:26:41","date_gmt":"2025-04-27T07:26:41","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=8197"},"modified":"2026-04-28T10:42:53","modified_gmt":"2026-04-28T10:42:53","slug":"why-is-camphor-quinone-commonly-used-as-a-photosensitizer-in-light-curing-composite-resins","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/fr\/why-is-camphor-quinone-commonly-used-as-a-photosensitizer-in-light-curing-composite-resins\/","title":{"rendered":"Pourquoi la quinone de camphre est-elle couramment utilis\u00e9e comme photosensibilisateur dans les r\u00e9sines composites photopolym\u00e9risables ?"},"content":{"rendered":"<p>L'utilisation r\u00e9pandue de la camphorquinone (CQ) comme photosensibilisateur (photo-initiateur) dans les r\u00e9sines composites photopolym\u00e9risables (en particulier les mat\u00e9riaux de restauration dentaire) est \u00e9troitement li\u00e9e \u00e0 ses propri\u00e9t\u00e9s chimiques uniques et \u00e0 ses avantages en termes d'application. Les raisons sp\u00e9cifiques analys\u00e9es sont les suivantes :<\/p>\n<p>1. Longueur d'onde de la lumi\u00e8re visible adapt\u00e9e \u00e0 l'application clinique<br \/>\nCaract\u00e9ristiques d'absorption :<br \/>\nLe pic d'absorption de la camphorquinone se situe dans la r\u00e9gion de la lumi\u00e8re bleue de 468 nm, qui correspond fortement \u00e0 la lumi\u00e8re bleue (450-490 nm) \u00e9mise par les \u00e9quipements de photopolym\u00e9risation dentaire (par exemple, les lampes de photopolym\u00e9risation \u00e0 LED).<\/p>\n<p>Les agents de polym\u00e9risation UV traditionnels (par exemple, les \u00e9thers diph\u00e9nyliques de benz\u00e8ne) n\u00e9cessitent une lumi\u00e8re ultraviolette (UV) pour \u00eatre excit\u00e9s, mais les UV sont nocifs pour les tissus humains, alors que la lumi\u00e8re bleue est plus s\u00fbre et plus p\u00e9n\u00e9trante pour les op\u00e9rations buccales.<\/p>\n<p>Efficacit\u00e9 \u00e9lev\u00e9e de la photoinitiation :<br \/>\nLa CQ absorbe rapidement l'\u00e9nergie sous irradiation de lumi\u00e8re bleue et g\u00e9n\u00e8re des radicaux libres actifs (par r\u00e9action de capture d'hydrog\u00e8ne ou par effet synergique avec des acc\u00e9l\u00e9rateurs amin\u00e9s), qui initient efficacement la polym\u00e9risation des monom\u00e8res de r\u00e9sine (par exemple Bis-GMA, UDMA).<\/p>\n<p>2. Bonne biocompatibilit\u00e9 et s\u00e9curit\u00e9<br \/>\nFaible cytotoxicit\u00e9 :<br \/>\nLa quinone de camphre elle-m\u00eame et ses produits de photolyse (par exemple les d\u00e9riv\u00e9s du camphre) ont une faible toxicit\u00e9 et r\u00e9pondent aux normes de biocompatibilit\u00e9 pour les mat\u00e9riaux dentaires (par exemple ISO 10993).<\/p>\n<p>Par rapport \u00e0 d'autres photo-initiateurs (par exemple le TPO), la CQ pr\u00e9sente des r\u00e9sidus plus faibles apr\u00e8s durcissement et une meilleure s\u00e9curit\u00e9 \u00e0 long terme.<\/p>\n<p>Pas d'odeur irritante :<br \/>\nCQ n'a pas d'odeur volatile ou irritante \u00e9vidente, ce qui permet de l'utiliser dans un environnement buccal ferm\u00e9 afin d'\u00e9viter toute g\u00eane pour le patient.<\/p>\n<p>3. Compatibilit\u00e9 avec les syst\u00e8mes de r\u00e9sine<br \/>\nSolubilit\u00e9 et stabilit\u00e9 :<br \/>\nLa CQ a une solubilit\u00e9 \u00e9lev\u00e9e (environ 0,1-1 wt%) dans la matrice de r\u00e9sine (par exemple, monom\u00e8res de m\u00e9thacrylate) et est chimiquement stable \u00e0 temp\u00e9rature ambiante, n'est pas facile \u00e0 polym\u00e9riser spontan\u00e9ment ou \u00e0 d\u00e9grader, ce qui prolonge la p\u00e9riode de stockage du mat\u00e9riau.<\/p>\n<p>Adaptation des couleurs :<br \/>\nLe CQ lui-m\u00eame est jaune clair, mais la couleur a peu d'effet apr\u00e8s le durcissement de la r\u00e9sine, ce qui convient particuli\u00e8rement aux mat\u00e9riaux de restauration dentaire pour des exigences esth\u00e9tiques (par exemple, les r\u00e9sines composites doivent correspondre \u00e0 la couleur naturelle de la dent).<\/p>\n<p>4. Synergie et flexibilit\u00e9 de la formulation<br \/>\nSynergie avec les acc\u00e9l\u00e9rateurs \u00e0 base d'amine :<br \/>\nLes formulations cliniques utilisent souvent la CQ en combinaison avec des acc\u00e9l\u00e9rateurs d'amines tertiaires (tels que le DMABEE, le 4-EDMAB) pour former un syst\u00e8me d'oxydor\u00e9duction :<\/p>\n<p>Excitation de la CQ par la lumi\u00e8re bleue \u2192 CQ des atomes d'hydrog\u00e8ne de l'amine \u2192 g\u00e9n\u00e9ration de radicaux libres \u2192 initiation de la polym\u00e9risation de la r\u00e9sine.<\/p>\n<p>Cette action synergique am\u00e9liore consid\u00e9rablement l'efficacit\u00e9 de l'amor\u00e7age et permet un durcissement rapide \u00e0 de faibles intensit\u00e9s lumineuses.<\/p>\n<p>Profondeur de polym\u00e9risation r\u00e9glable :<br \/>\nEn ajustant la concentration de CQ et l'intensit\u00e9 de la lumi\u00e8re, la profondeur de polym\u00e9risation de la r\u00e9sine peut \u00eatre contr\u00f4l\u00e9e (typiquement 2-4 mm) pour r\u00e9pondre \u00e0 la demande de polym\u00e9risation couche par couche des restaurations dentaires.<\/p>\n<p>5. Soutien technologique et r\u00e9glementaire \u00e9prouv\u00e9<br \/>\nV\u00e9rification de l'historique de la demande :<br \/>\nLa CQ est utilis\u00e9e dans les r\u00e9sines dentaires depuis les ann\u00e9es 1970. Elle a accumul\u00e9 un grand nombre de donn\u00e9es cliniques et ses performances et sa s\u00e9curit\u00e9 ont \u00e9t\u00e9 largement reconnues.<\/p>\n<p>Les normes de l'American Dental Association (ADA) et de l'ISO recommandent la CQ comme initiateur principal pour les r\u00e9sines photopolym\u00e9risables.<\/p>\n<p>Limites des alternatives :<br \/>\nD'autres initiateurs de lumi\u00e8re visible (par exemple, TPO, Ivocerin) ont des efficacit\u00e9s d'initiation plus \u00e9lev\u00e9es mais souffrent des probl\u00e8mes suivants :<\/p>\n<p>Interf\u00e9rence des couleurs (par exemple, le TPO est jaune, ce qui nuit \u00e0 l'esth\u00e9tique) ;<\/p>\n<p>Toxicit\u00e9 controvers\u00e9e (les m\u00e9tabolites de certains nouveaux initiateurs peuvent pr\u00e9senter des risques potentiels) ;<\/p>\n<p>Co\u00fbt et complexit\u00e9 du processus (les formulations de r\u00e9sine et l'\u00e9quipement doivent \u00eatre adapt\u00e9s).<\/p>\n<p><!-- lc-commercial-start --><\/p>\n<h2>A practical selection route for photoinitiator-related projects<\/h2>\n<p>When technical buyers or formulators screen photoinitiators, the most useful decision frame is usually cure quality plus application fit: which package cures reliably, keeps appearance acceptable, and still works under the lamp, film thickness, and substrate conditions of the actual process.<\/p>\n<ul>\n<li><strong>Match the package to the lamp first:<\/strong> mercury lamps, UV LEDs, and visible-light systems can rank the same photoinitiators very differently.<\/li>\n<li><strong>Check depth cure and surface cure separately:<\/strong> a film that feels dry on top can still be weak underneath.<\/li>\n<li><strong>Balance yellowing with reactivity:<\/strong> the strongest deep-cure route is not always the best commercial choice if color or migration risk becomes unacceptable.<\/li>\n<li><strong>Use the final formula as the benchmark:<\/strong> pigment load, monomer package, and film thickness can all change the apparent ranking of the same initiator.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-tpo-l-cas-84434-11-7\/\">CHLUMINIT TPO-L<\/a>:<\/strong> A strong low-yellowing reference for LED-oriented UV systems.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/cas-270586-78-2\/\">CHLUMINIT TMO<\/a>:<\/strong> A valuable comparison point when lower yellowing or TPO-replacement discussions matter.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\">CHLUMINIT 819<\/a>:<\/strong> Useful when a formulation needs stronger absorption and deeper cure support.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/fr\/product\/irgacure-1173-cas-7473-98-5\/\">CHLUMINIT 1173<\/a>:<\/strong> A practical comparison point for classic short-wave UV initiation.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why are blended photoinitiator packages so common?<\/strong><br \/>Because one product may control yellowing or lamp fit well while another improves cure depth or line-speed performance, so the full package is often stronger than any single grade.<\/p>\n<p><strong>Should incomplete cure always be solved by adding more initiator?<\/strong><br \/>Not automatically. The real limitation may be the lamp, film thickness, pigment shading, or the rest of the reactive system rather than simple under-dosage.<\/p>\n<p><!-- lc-commercial-end --><\/p>\n<h2><strong><b>Contactez-nous d\u00e8s maintenant !<\/b><\/strong><\/h2>\n<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> For practical formulation work, photoinitiator screening starts with the light source and film build, then checks yellowing, adhesion, and cure completeness under real production conditions.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<h4><strong><b>Si vous avez besoin d'un prix ou d'un test d'\u00e9chantillon, veuillez indiquer vos coordonn\u00e9es dans le formulaire ci-dessous. Nous vous contacterons g\u00e9n\u00e9ralement dans les 24 heures. Vous pouvez \u00e9galement m'envoyer un courriel <a href=\"mailto:info@longchangchemical.com\"><span style=\"color: #00ccff;\">info@longchangchemical.com<\/span><\/a>\u00a0pendant les heures de travail ( 8:30 am to 6:00 pm UTC+8 Mon.~Sat. ) ou utilisez le chat en direct du site web pour obtenir une r\u00e9ponse rapide.<\/b><\/strong><\/h4>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 435.77pt;\" border=\"0\" width=\"581\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt; width: 215.25pt;\" width=\"287\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-tpo-cas-75980-60-8\/\"><span style=\"color: #00ccff;\">Photoinitiateur TPO<\/span><\/a><\/td>\n<td style=\"width: 220.50pt;\" width=\"294\">CAS 75980-60-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/cas-270586-78-2\/\"><span style=\"color: #00ccff;\">Photoinitiateur TMO<\/span><\/a><\/td>\n<td>CAS 270586-78-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-pd-01-cas-579-07-7\/\"><span style=\"color: #00ccff;\">Photoinitiateur PD-01<\/span><\/a><\/td>\n<td>CAS 579-07-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-pbz-cas-2128-93-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur PBZ<\/span><\/a><\/td>\n<td>CAS 2128-93-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-oxe-02-cas-478556-66-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur OXE-02<\/span><\/a><\/td>\n<td>CAS 478556-66-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-ombb\/\"><span style=\"color: #00ccff;\">Photoinitiateur OMBB<\/span><\/a><\/td>\n<td>CAS 606-28-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mpbz-6012\/\"><span style=\"color: #00ccff;\">Photoinitiateur MPBZ (6012)<\/span><\/a><\/td>\n<td>CAS 86428-83-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mbp-cas-134-84-9\/\"><span style=\"color: #00ccff;\">Photoinitiateur MBP<\/span><\/a><\/td>\n<td>CAS 134-84-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-mbf-cas-15206-55-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur MBF<\/span><\/a><\/td>\n<td>CAS 15206-55-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-lap-cas-85073-19-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur LAP<\/span><\/a><\/td>\n<td>CAS 85073-19-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-itx-cas-5495-84-1\/\"><span style=\"color: #00ccff;\">Photoinitiateur ITX<\/span><\/a><\/td>\n<td>CAS 5495-84-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-emk\/\"><span style=\"color: #00ccff;\">Photoinitiateur EMK<\/span><\/a><\/td>\n<td>CAS 90-93-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-eha-cas-21245-02-3\/\"><span style=\"color: #00ccff;\">Photoinitiateur EHA<\/span><\/a><\/td>\n<td>CAS 21245-02-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-edb-cas-10287-53-3\/\"><span style=\"color: #00ccff;\">Photo-initiateur EDB<\/span><\/a><\/td>\n<td>CAS 10287-53-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-detx-cas-82799-44-8\/\"><span style=\"color: #00ccff;\">Photoinitiateur DETX<\/span><\/a><\/td>\n<td>CAS 82799-44-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cq\/\"><span style=\"color: #00ccff;\">Photoinitiateur CQ \/ Camphorquinone<\/span><\/a><\/td>\n<td>CAS 10373-78-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-cbp-cas-134-85-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur CBP<\/span><\/a><\/td>\n<td>CAS 134-85-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-bp-cas-119-61-9\/\"><span style=\"color: #00ccff;\">Photo-initiateur BP \/ Benzoph\u00e9none<\/span><\/a><\/td>\n<td>CAS 119-61-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-bms\/\"><span style=\"color: #00ccff;\">Photoinitiateur BMS<\/span><\/a><\/td>\n<td>CAS 83846-85-9<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-938\/\"><span style=\"color: #00ccff;\">Photoinitiateur 938<\/span><\/a><\/td>\n<td>CAS 61358-25-6<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-937-cas-71786-70-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 937<\/span><\/a><\/td>\n<td>CAS 71786-70-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-dw\/\"><span style=\"color: #00ccff;\">Photo-initiateur 819 DW<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-819-irgacure-819-cas-162881-26-7\/\"><span style=\"color: #00ccff;\">Photoinitiateur 819<\/span><\/a><\/td>\n<td>CAS 162881-26-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-784-cas-125051-32-3\/\"><span style=\"color: #00ccff;\">Photoinitiateur 784<\/span><\/a><\/td>\n<td>CAS 125051-32-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-754-cas-211510-16-6-442536-99-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 754<\/span><\/a><\/td>\n<td>CAS 211510-16-6 442536-99-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-6993-cas-71449-78-0\/\"><span style=\"color: #00ccff;\">Photoinitiateur 6993<\/span><\/a><\/td>\n<td>CAS 71449-78-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-6976\/\"><span style=\"color: #00ccff;\">Photoinitiateur 6976<\/span><\/a><\/td>\n<td>CAS 71449-78-0 89452-37-9 108-32-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-379-cas-119344-86-4\/\"><span style=\"color: #00ccff;\">Photoinitiateur 379<\/span><\/a><\/td>\n<td>CAS 119344-86-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-369-cas-119313-12-1\/\"><span style=\"color: #00ccff;\">Photoinitiateur 369<\/span><\/a><\/td>\n<td>CAS 119313-12-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-160\/\">Photoinitiateur 160<\/a><\/span><\/td>\n<td>CAS 71868-15-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/photoinitiator-1206\/\"><span style=\"color: #00ccff;\">Photoinitiateur 1206<\/span><\/a><\/td>\n<td><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/fr\/product\/irgacure-1173-cas-7473-98-5\/\"><span style=\"color: #00ccff;\">Photoinitiateur 1173<\/span><\/a><\/td>\n<td>CAS 7473-98-5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>The widespread use of camphorquinone (CQ) as a photosensitizer (photoinitiator) in light-curing composite resins (especially dental restorative materials) is mainly closely related to its unique chemical properties and application advantages.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[143],"tags":[],"class_list":["post-8197","post","type-post","status-publish","format-standard","hentry","category-uv-light-curing-series"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why is camphor quinone commonly used as a photosensitizer in light-curing composite resins? - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"The widespread use of camphorquinone (CQ) as a photosensitizer (photoinitiator) in light-curing composite resins (especially dental restorative material...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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