{"id":1569,"date":"2025-07-24T08:10:58","date_gmt":"2025-07-24T08:10:58","guid":{"rendered":"https:\/\/hocera.com\/?p=1569"},"modified":"2025-12-25T07:08:45","modified_gmt":"2025-12-25T07:08:45","slug":"recommandations-de-preparation-dentaire-pour-les-couronnes-tout-ceramique-en-zircone-points-cles-cliniques-de-hocera","status":"publish","type":"post","link":"https:\/\/hocera.com\/fr\/blog\/2025\/07\/24\/tooth-preparation-guidelines-for-all-ceramic-zirconia-crowns-clinical-keys-from-hocera\/","title":{"rendered":"Recommandations pour la pr\u00e9paration des dents en vue de la pose de couronnes en zircone tout c\u00e9ramique\u00a0: points cl\u00e9s cliniques de Hocera"},"content":{"rendered":"<p><!-- SEO \u4f18\u5316\u4e3b\u6807\u9898 --><\/p>\n<h3 data-start=\"180\" data-end=\"211\" data-relingo-block=\"true\" data-relin-paragraph=\"2274\">\u2014 Conseils cliniques de Hocera<\/h3>\n<p data-start=\"213\" data-end=\"434\" data-relingo-block=\"true\" data-relin-paragraph=\"2275\">Les couronnes en zircone deviennent le premier choix en dentisterie restauratrice gr\u00e2ce \u00e0 leur r\u00e9sistance sup\u00e9rieure, leur esth\u00e9tique et leur biocompatibilit\u00e9. Cependant, <strong data-start=\"362\" data-end=\"390\">pr\u00e9paration dentaire ad\u00e9quate<\/strong> est le fondement d&#039;un r\u00e9sultat durable.<\/p>\n<p data-start=\"436\" data-end=\"617\" data-relingo-block=\"true\" data-relin-paragraph=\"2276\">Dans cet article, <strong data-start=\"453\" data-end=\"463\">Hocera<\/strong>, un innovateur mondial dans le domaine des mat\u00e9riaux dentaires en zircone, partage les directives cliniques essentielles pour aider les praticiens \u00e0 obtenir des performances optimales des couronnes en zircone.<\/p>\n<hr data-start=\"619\" data-end=\"622\" data-relingo-block=\"true\" \/>\n<h2 data-start=\"624\" data-end=\"656\" data-relingo-block=\"true\" data-relin-paragraph=\"2277\">1. R\u00e9duction de la surface occlusale<\/h2>\n<p data-start=\"658\" data-end=\"740\" data-relingo-block=\"true\" data-relin-paragraph=\"2278\">\ud83d\udd39 La zircone poss\u00e8de une grande r\u00e9sistance, ce qui permet <strong data-start=\"706\" data-end=\"739\">r\u00e9duction minimale mais pr\u00e9cise<\/strong>.<\/p>\n<ul data-start=\"742\" data-end=\"981\">\n<li data-start=\"742\" data-end=\"783\">\n<p data-start=\"744\" data-end=\"783\" data-relingo-block=\"true\" data-relin-paragraph=\"2279\"><strong data-start=\"744\" data-end=\"769\">R\u00e9duction recommand\u00e9e<\/strong>: 0,5\u20131,0 mm<\/p>\n<\/li>\n<li data-start=\"784\" data-end=\"856\">\n<p data-start=\"786\" data-end=\"856\" data-relingo-block=\"true\" data-relin-paragraph=\"2280\">En cas de bruxisme ou de piliers d\u00e9color\u00e9s\u00a0: augmenter l\u00e9g\u00e8rement \u00e0 1,2\u20131,5 mm<\/p>\n<\/li>\n<li data-start=\"857\" data-end=\"981\">\n<p data-start=\"859\" data-end=\"981\" data-relingo-block=\"true\"><strong data-start=\"859\" data-end=\"866\">Conseil<\/strong>La r\u00e9duction anatomique (avec des inclinaisons naturelles des cuspides d&#039;environ 30\u00b0) offre un meilleur ajustement que les r\u00e9ductions occlusales planes.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"983\" data-end=\"1061\" data-relingo-block=\"true\" data-relin-paragraph=\"2282\">\u2705 Une pr\u00e9paration conservatrice pr\u00e9serve la structure de la dent sans compromettre sa solidit\u00e9.<\/p>\n<hr data-start=\"1063\" data-end=\"1066\" data-relingo-block=\"true\" \/>\n<h2 data-start=\"1068\" data-end=\"1096\" data-relingo-block=\"true\" data-relin-paragraph=\"2283\">2. Pr\u00e9paration de la paroi axiale<\/h2>\n<p data-start=\"1098\" data-end=\"1174\" data-relingo-block=\"true\" data-relin-paragraph=\"2284\">\ud83d\udd39 Le <strong data-start=\"1105\" data-end=\"1141\">Convergence occlusale totale (COT)<\/strong> L&#039;angle influe sur le maintien et l&#039;ajustement.<\/p>\n<ul data-start=\"1176\" data-end=\"1320\">\n<li data-start=\"1176\" data-end=\"1202\">\n<p data-start=\"1178\" data-end=\"1202\" data-relingo-block=\"true\" data-relin-paragraph=\"2285\">Table des mati\u00e8res id\u00e9ale\u00a0: <strong data-start=\"1189\" data-end=\"1200\">10\u00b0\u201322\u00b0<\/strong><\/p>\n<\/li>\n<li data-start=\"1203\" data-end=\"1278\">\n<p data-start=\"1205\" data-end=\"1221\" data-relingo-block=\"true\" data-relin-paragraph=\"2286\">Exemple molaire :<\/p>\n<ul data-start=\"1224\" data-end=\"1278\">\n<li data-start=\"1224\" data-end=\"1249\">\n<p data-start=\"1226\" data-end=\"1249\" data-relingo-block=\"true\" data-relin-paragraph=\"2287\">TOC m\u00e9siodistal \u2248 24\u00b0<\/p>\n<\/li>\n<li data-start=\"1252\" data-end=\"1278\">\n<p data-start=\"1254\" data-end=\"1278\" data-relingo-block=\"true\" data-relin-paragraph=\"2288\">COT buccolingual \u2248 22\u00b0<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-start=\"1279\" data-end=\"1320\">\n<p data-start=\"1281\" data-end=\"1320\" data-relingo-block=\"true\" data-relin-paragraph=\"2289\"><strong data-start=\"1281\" data-end=\"1308\">R\u00e9duction axiale minimale<\/strong>: \u2265 0,5 mm<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1322\" data-end=\"1415\" data-relingo-block=\"true\" data-relin-paragraph=\"2290\">\u2705 Assurez-vous d&#039;une conicit\u00e9 uniforme et de parois axiales lisses pour permettre une restauration passive par ajustement par friction.<\/p>\n<hr data-start=\"1417\" data-end=\"1420\" data-relingo-block=\"true\" \/>\n<h2 data-start=\"1422\" data-end=\"1441\" data-relingo-block=\"true\" data-relin-paragraph=\"2291\">3. Conception des marges<\/h2>\n<p data-start=\"1443\" data-end=\"1549\" data-relingo-block=\"true\" data-relin-paragraph=\"2292\">\ud83d\udd39 La r\u00e9sistance de la zircone permet de multiples conceptions de marges, contrairement aux c\u00e9ramiques de verre fragiles qui \u00e9taient limit\u00e9es.<\/p>\n<ul data-start=\"1551\" data-end=\"1763\">\n<li data-start=\"1551\" data-end=\"1625\">\n<p data-start=\"1553\" data-end=\"1625\" data-relingo-block=\"true\" data-relin-paragraph=\"2293\">Choix courants\u00a0: <strong data-start=\"1569\" data-end=\"1581\">\u00c9paule<\/strong>, <strong data-start=\"1583\" data-end=\"1594\">Chanfreiner<\/strong>, ou <strong data-start=\"1599\" data-end=\"1623\">Chanfrein profond arrondi<\/strong><\/p>\n<\/li>\n<li data-start=\"1626\" data-end=\"1678\">\n<p data-start=\"1628\" data-end=\"1678\" data-relingo-block=\"true\" data-relin-paragraph=\"2294\"><strong data-start=\"1628\" data-end=\"1647\">Marges arrondies<\/strong> aider \u00e0 \u00e9viter les stress internes<\/p>\n<\/li>\n<li data-start=\"1679\" data-end=\"1763\">\n<p data-start=\"1681\" data-end=\"1763\" data-relingo-block=\"true\" data-relin-paragraph=\"2295\"><strong data-start=\"1681\" data-end=\"1706\">marges supragingivales<\/strong> sont privil\u00e9gi\u00e9es pour une meilleure hygi\u00e8ne et une plus grande pr\u00e9cision de num\u00e9risation<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"1765\" data-end=\"1834\" data-relingo-block=\"true\" data-relin-paragraph=\"2296\">\u2705 \u00c9vitez les angles internes aigus \u2014 ceux-ci peuvent entra\u00eener des \u00e9br\u00e9chures ou un mauvais ajustement.<\/p>\n<hr data-start=\"1836\" data-end=\"1839\" data-relingo-block=\"true\" \/>\n<h2 data-start=\"1841\" data-end=\"1890\" data-relingo-block=\"true\" data-relin-paragraph=\"2297\">4. Conseils particuliers pour la zircone ultra-translucide<\/h2>\n<p data-start=\"1892\" data-end=\"1974\" data-relingo-block=\"true\" data-relin-paragraph=\"2298\">\ud83d\udd39 La zircone translucide offre une esth\u00e9tique am\u00e9lior\u00e9e mais n\u00e9cessite une pr\u00e9paration plus minutieuse.<\/p>\n<ul data-start=\"1976\" data-end=\"2187\">\n<li data-start=\"1976\" data-end=\"2009\">\n<p data-start=\"1978\" data-end=\"2009\" data-relingo-block=\"true\" data-relin-paragraph=\"2299\">\u00c9paisseur minimale\u00a0: <strong data-start=\"1997\" data-end=\"2007\">0,8 mm<\/strong><\/p>\n<\/li>\n<li data-start=\"2010\" data-end=\"2070\">\n<p data-start=\"2012\" data-end=\"2070\" data-relingo-block=\"true\" data-relin-paragraph=\"2300\">Recommand\u00e9: <strong data-start=\"2025\" data-end=\"2039\">0,8\u20131,5 mm<\/strong>, selon la couleur du pilier<\/p>\n<\/li>\n<li data-start=\"2071\" data-end=\"2137\">\n<p data-start=\"2073\" data-end=\"2137\" data-relingo-block=\"true\" data-relin-paragraph=\"2301\"><strong data-start=\"2073\" data-end=\"2106\">Utilisez un chanfrein large ou un \u00e9paulement.<\/strong> avec des angles internes arrondis<\/p>\n<\/li>\n<li data-start=\"2138\" data-end=\"2187\">\n<p data-start=\"2140\" data-end=\"2187\" data-relingo-block=\"true\" data-relin-paragraph=\"2302\">\u00c9vitez les lignes de finition \u00e0 bords tranchants ou effil\u00e9s.<\/p>\n<\/li>\n<\/ul>\n<p data-start=\"2189\" data-end=\"2268\" data-relingo-block=\"true\" data-relin-paragraph=\"2303\">\u2705 Plus de translucidit\u00e9 = moins de r\u00e9sistance \u2014 une pr\u00e9paration pr\u00e9cise devient encore plus importante.<\/p>\n<hr data-start=\"2270\" data-end=\"2273\" data-relingo-block=\"true\" \/>\n<h2 data-start=\"2275\" data-end=\"2291\" data-relingo-block=\"true\" data-relin-paragraph=\"2304\">\ud83c\udfc1 Conclusion<\/h2>\n<p data-start=\"2293\" data-end=\"2382\" data-relingo-block=\"true\" data-relin-paragraph=\"2305\">La pr\u00e9paration des dents d\u00e9termine directement le succ\u00e8s et la long\u00e9vit\u00e9 des restaurations en zircone.<\/p>\n<p data-start=\"2384\" data-end=\"2624\" data-relingo-block=\"true\" data-relin-paragraph=\"2306\">En suivant ces directives simples mais efficaces, les cliniciens peuvent exploiter pleinement le potentiel de <strong data-start=\"2480\" data-end=\"2542\">Les syst\u00e8mes multicouches et en zircone ultra-translucide d&#039;Hocera<\/strong> \u2014 en r\u00e9alisant des restaurations durables, esth\u00e9tiques et cliniquement efficaces.<\/p>\n<style>\r\n.lwrp.link-whisper-related-posts{\r\n            \r\n            margin-top: 40px;\nmargin-bottom: 30px;\r\n        }\r\n        .lwrp .lwrp-title{\r\n            \r\n            \r\n        }.lwrp .lwrp-description{\r\n            \r\n            \r\n\r\n        }\r\n        .lwrp .lwrp-list-container{\r\n        }\r\n        .lwrp .lwrp-list-multi-container{\r\n            display: flex;\r\n        }\r\n        .lwrp .lwrp-list-double{\r\n            width: 48%;\r\n        }\r\n        .lwrp .lwrp-list-triple{\r\n            width: 32%;\r\n        }\r\n        .lwrp .lwrp-list-row-container{\r\n            display: flex;\r\n            justify-content: space-between;\r\n        }\r\n        .lwrp .lwrp-list-row-container .lwrp-list-item{\r\n            width: calc(25% - 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