口腔學(xué)英文課件：Endodontics(PPT 60頁)

1、Endodontics第1頁，共60頁。procdure1.Isolation2. Root canal preparation3. Root canal filling第2頁，共60頁。第3頁，共60頁。Root canal configuration第4頁，共60頁。第5頁，共60頁。第6頁，共60頁。第7頁，共60頁。第8頁，共60頁。第9頁，共60頁。第10頁，共60頁。第11頁，共60頁。IsolationThe use of rubber dam is essential for good-quality endodontic treatment. With experience

2、it can be placed quickly and efficiently, and it improves treatment for both operator and patient. 第12頁，共60頁。isolation第13頁，共60頁。Root canal preparationPreoperative radiographLocation of access cavityRemoval of the pulp chamber roof and coronal pulp tissueEstimate lengthPenetrate to the pulp chamberLi

3、ft off the roof with a bur in a pulling actionRefine the access cavity第14頁，共60頁。 4.creating straight-line access The completed access cavity gives straight-line access to all the canals. A well designed access cavity permits: (1) complete debridement of the pulp chamber (2) visualization of the pulp

4、 floor (3) unimpeded placement of instruments into the root canals (4) conservation of tooth tissue 第15頁，共60頁。第16頁，共60頁。第17頁，共60頁。第18頁，共60頁。5. Working length determination The most widely accepted method of establishing working length has been with radiography. In this method, the working length is

5、initially estimated by taking a measurement from an undistorted, preoperative radiograph.第19頁，共60頁。第20頁，共60頁。第21頁，共60頁。第22頁，共60頁。第23頁，共60頁。6. Root canal irrigationThe action of an irrigant include:(1)Rinsing of debris(2) Lubrication of the canal system which facilitates instrumentation(3) Dissolutio

6、n of remaining organic matter(4) Antibacterial properties(5) Softening and removing the smear layer(6) Penetrating into areas inaccessible to instruments, thereby extending the cleaning process. 第24頁，共60頁。第25頁，共60頁。第26頁，共60頁。7. shaping and cleaning of the root canal system with instrumentation techn

7、iquesThe essentials of the coronal-apical approach to root canal cleaning and shaping are as follows:Developemnt of straight-line access from the occlusal or lingual surface into the pulp chamberRemoval of all overhanging ledges from the pulp chamber roofRemoval of lingual ledges or cervical bulges

8、formed due to the deposition of dentine in the cervical part of the tooth第27頁，共60頁。(4) Development of divergent walls in the pulp chamber from the cavosurface margin to the chamber floor(5) Cutting of a funnel-shaped preparation, with its narrowest part located in the tooth apically.8. Temporary fil

9、ling Materials for temporary sealing of endodontic access cavities include reinforced zinc oxide-eugenol and calcium sulphate-based materials.第28頁，共60頁。第29頁，共60頁。第30頁，共60頁。第31頁，共60頁。第32頁，共60頁。第33頁，共60頁。第34頁，共60頁。第35頁，共60頁。第36頁，共60頁。第37頁，共60頁。Root canal filling1. Material used to fill root canal(1)Se

10、alers Zinc oxide-eugenol sealers Calcium hydroxide sealers(2) Gutta-percha Gutta-percha is a form of rubber and it is mixed with other materials to produce a blend that can be used effectively within the root canal.第38頁，共60頁。第39頁，共60頁。 2.Canal filling with gutta-percha The objective of the root cana

11、l filling is to completely fil the canal system in an attempt to seal the canal from leakage apically and coronally. 3. Lateral condensation4. Coronal restoration A permanent coronal restoration should be placed without unnecessary delay.第40頁，共60頁。第41頁，共60頁。第42頁，共60頁。第43頁，共60頁。第44頁，共60頁。第45頁，共60頁。第4

12、6頁，共60頁。第47頁，共60頁。第48頁，共60頁。第49頁，共60頁。第50頁，共60頁。第51頁，共60頁。第52頁，共60頁。第53頁，共60頁。第54頁，共60頁。第55頁，共60頁。第56頁，共60頁。第57頁，共60頁。第58頁，共60頁。Question Whats the procedure of the endodontics therapy?第59頁，共60頁。References1.Endodontics Problem-solving in clinical practice author: Martin Dunitz2. Problem solving in endodontics prevention,ide