OBJECTIVES Endodontics has undergone great changes with the introduc tion of increasingly precise in strumentation with state-of-the art mechanics, making it more reliable and predictable. Howev er, the management of canals with large apices remains a chal lenge. This study aims to present a technique for the preparation and obturation of root canals with apices larger than 60 hundredths of a millimeter, using Mtwo® in struments. MATERIALS AND METHODS This study focuses on the use of nickel-titanium (Ni-Ti) rotary in struments to prepare and obtu rate root canals with apices of considerable size (over 60 hun dredths of a millimeter). The Ni-Ti alloy, known for characteristics such as shape memory and su perelasticity, has revolutionized endodontics, making it more cer tain and repeatable. Endodontic surgery was successfully per formed using the Microseal tech nique with gutta-percha and Ni Ti cones. The study was applied to a clinical case of endodontic retreatment on a lower molar and demonstrated the effectiveness of the “GC home made” tech nique in the preparation and ob turation of canals with large api ces. This approach offers an in novative and promising alterna tive in endodontic practice. RESULTS formed using nickel-titanium (Ni Ti) rotary instruments and the Microseal technique for prepara tion and obturation of root canals with sizable apices. Blockage of the inferior alveolar nerve was achieved with mepivacaine with adrenaline 1:100000, and isola tion of the operative field was achieved with the use of rubber dam. The pulp chamber opening procedure was performed using high-speed rotary diamond burs, followed by root canal access. During root canal instrumenta tion with the Mtwo® system, al ternating irrigation with 5% sodi um hypochlorite and 17% eth ylene diamine tetraacetic acid was used. For canal preparation, a sequence of Mtwo® instru ments with different diameters and taper was used. To reach large apices, an innovative tech nique called “GC home made” was developed, which involves progressive cutting of the tip of an Mtwo® instrument. After preparation, obturation was per The technique was effective in reaching and sealing the apex of the canals. Overall, the compre hensive approach ensured accu rate and advanced endodontic treatment, demonstrating the ef fectiveness of the combination of selected root canal instruments and the “GC home made” tech nique in managing large apexes. CONCLUSIONS The described technique proved effective in the treatment of ca nals with large apices, allowing febbraio/2025 DENTAL CADMOS for adequate preparation and ob turation. This approach could im prove clinical success in cases with complex root anatomy. CLINICAL SIGNIFICANCE The material of the root canal in struments used offers flexibility, efficiency, and cutting ability during root canal instrumentation due to its shape memory and su perelasticity. However, there are some risks such as the instru ments fracture under lower loads and fatigue accumulation. Proper operative technique and control of the applied load is important. Root canal obturation is crucial to endodontic success, with em phasis on three-dimensional sealing and careful selection of the apical limit.
OBIETTIVI: L’endodonzia ha subito grandi cambiamenti grazie all’introduzione di strumentazioni sempre più precise con meccaniche all’avanguardia, che l’hanno resa più affidabile e prevedibile. Tuttavia, la gestione dei canali con apici di grosse dimensioni rimane una sfida. Questo studio si propone di presentare una tecnica per la preparazione e l’otturazione dei canali radicolari con apici di dimensioni superiori a 60 centesimi di millimetro, utilizzando strumenti canalari specifici. MATERIALI E METODI: Lo studio è focalizzato sull’uso degli strumenti rotanti in nichel-titanio (Ni-Ti) per preparare e otturare canali radicolari con apici di dimensioni considerevoli (oltre i 60 centesimidi millimetro). La lega Ni-Ti, nota per caratteristiche come memoria di forma e superelasticità, ha rivoluzionato l’endodonzia, rendendola più certa e ripetibile. L’intervento endodontico è stato eseguito con successo utilizzando gli strumenti rotanti in nichel-titanio (Ni-Ti) e la tecnica Microseal per la preparazione e l’otturazione dei canali radicolari con apici di dimensioni considerevoli. Il blocco del nervo alveolare inferiore è stato ottenuto con mepivacaina con adrenalina 1:100000, e l’isolamento del campo operatorio è stato realizzato con l’uso della diga di gomma. La procedura di apertura della camera pulpare è stata eseguita tramite frese diamantate rotanti ad alta velocità, seguita dall’accesso ai canali radicolari. Durante la strumentazione canalare con il sistema Mtwo®, è stata utilizzata un’irrigazione alternata con ipoclorito di sodio al 5% e acido etilenodiamminotetraacetico al 17%. Per la preparazione dei canali, è stata impiegata una sequenza di strumenti Mtwo® con diversi diametri e conicità. Per raggiungere gli apici di grosse dimensioni, è stata sviluppata una tecnica innovativa chiamata “GC home made”, che prevede il taglio progressivo della punta di uno strumento Mtwo®. Dopo la preparazione, l’otturazione è stata eseguita utilizzando la tecnica Microseal con guttaperca e coni di guttaperca. Lo studio è stato applicato a un caso clinico di ritrattamento endodontico su un molare inferiore e ha dimostrato l’efficacia della tecnica “GC home made” nella preparazione e nell’otturazione dei canali con apici di grosse dimensioni. Questo approccio offre un’alternativa innovativa e promettente nella pratica endodontica. RISULTATI: La tecnica è stata efficace nel raggiungere e sigillare l’apice dei canali. Complessivamente, l’approccio ha garantito un trattamento endodontico accurato e avanzato, dimostrando l’efficacia della combinazione di strumenti canalari scelti e della tecnica “GC home made” nella gestione di apici di grosse dimensioni. CONCLUSIONI: La tecnica descritta si è dimostrata efficace nel trattamento di canali con apici di grosse dimensioni, consentendo una preparazione e un’otturazione adeguate. Tale approccio potrebbe migliorare il successo clinico nei casi con anatomia radicolare complessa. SIGNIFICATO CLINICO: Il materiale degli strumenti canalari utilizzati offre flessibilità, efficienza e capacità di taglio durante la strumentazione canalare grazie alla sua memoria di forma e superelasticità. Tuttavia, ci sono alcuni rischi come la frattura degli strumenti stessi sotto carichi maggiori e l’accumulo di fatica. Sono importanti una tecnica operativa corretta e il controllo del carico applicato. L’otturazione canalare è cruciale per il successo endodontico, con enfasi sul sigillo tridimensionale e la scelta accurata del limite apicale.
Gestione di apici larghi con tecnica ‘GC homemade’: case report con follow-up a 7 anni
Inchingolo, Francesco
;Dipalma, Gianna
2025-01-01
Abstract
OBJECTIVES Endodontics has undergone great changes with the introduc tion of increasingly precise in strumentation with state-of-the art mechanics, making it more reliable and predictable. Howev er, the management of canals with large apices remains a chal lenge. This study aims to present a technique for the preparation and obturation of root canals with apices larger than 60 hundredths of a millimeter, using Mtwo® in struments. MATERIALS AND METHODS This study focuses on the use of nickel-titanium (Ni-Ti) rotary in struments to prepare and obtu rate root canals with apices of considerable size (over 60 hun dredths of a millimeter). The Ni-Ti alloy, known for characteristics such as shape memory and su perelasticity, has revolutionized endodontics, making it more cer tain and repeatable. Endodontic surgery was successfully per formed using the Microseal tech nique with gutta-percha and Ni Ti cones. The study was applied to a clinical case of endodontic retreatment on a lower molar and demonstrated the effectiveness of the “GC home made” tech nique in the preparation and ob turation of canals with large api ces. This approach offers an in novative and promising alterna tive in endodontic practice. RESULTS formed using nickel-titanium (Ni Ti) rotary instruments and the Microseal technique for prepara tion and obturation of root canals with sizable apices. Blockage of the inferior alveolar nerve was achieved with mepivacaine with adrenaline 1:100000, and isola tion of the operative field was achieved with the use of rubber dam. The pulp chamber opening procedure was performed using high-speed rotary diamond burs, followed by root canal access. During root canal instrumenta tion with the Mtwo® system, al ternating irrigation with 5% sodi um hypochlorite and 17% eth ylene diamine tetraacetic acid was used. For canal preparation, a sequence of Mtwo® instru ments with different diameters and taper was used. To reach large apices, an innovative tech nique called “GC home made” was developed, which involves progressive cutting of the tip of an Mtwo® instrument. After preparation, obturation was per The technique was effective in reaching and sealing the apex of the canals. Overall, the compre hensive approach ensured accu rate and advanced endodontic treatment, demonstrating the ef fectiveness of the combination of selected root canal instruments and the “GC home made” tech nique in managing large apexes. CONCLUSIONS The described technique proved effective in the treatment of ca nals with large apices, allowing febbraio/2025 DENTAL CADMOS for adequate preparation and ob turation. This approach could im prove clinical success in cases with complex root anatomy. CLINICAL SIGNIFICANCE The material of the root canal in struments used offers flexibility, efficiency, and cutting ability during root canal instrumentation due to its shape memory and su perelasticity. However, there are some risks such as the instru ments fracture under lower loads and fatigue accumulation. Proper operative technique and control of the applied load is important. Root canal obturation is crucial to endodontic success, with em phasis on three-dimensional sealing and careful selection of the apical limit.| File | Dimensione | Formato | |
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