[Abstract] Objective through our department since March 2009 - July 2010 using dental operating microscope (DOM) on the treatment of refractory pulp periapical lesions cases, evaluation of dental surgery microscope refractory root canal treatment The clinical application of results. Transferred to our hospital and outside the hospital ordinary endodontics clinic to 89 patients, a total of 106 root canal refractory cases, including root canal calcified root canal filling plug, instrument fracture, omissions root canal mandibular first second molar "C"-shaped root canal, surgical microscope with ultrasonic root canal treatment instrument and other microsurgical instruments, foreign body removal, root canal preparation processing. Results The total effective rate of 86%. Conclusion: The dental operating microscope (Dental (dentistry) Operating (operation,surgical,surgery) microscope) with the relevant equipment can make more refractory teeth root canal treatment, so as to preserve the tooth.
Key words surgical microscope(dentistry Operation microscope,Dental (dentistry) Operating (operation,surgical,surgery) microscope) root canal treatment ultrasonic instruments
Dental operating microscope (DOM, dentistry Operation microscope,Dental (dentistry) Operating (operation,surgery) microscope) amplification effect and good lighting advantage due to its traditional endodontic treatment process from blindness to visual, handling a variety of causes root canal blockage, instrument fracture root canal calcification, "C" shaped canal, and achieved good results. This article by our hospital DOM treatment of refractory teeth Sui cases of periapical lesions, to evaluate the clinical effect.
1 Materials and methods
1.1 Case Source
Our department since March 2009 -2010 in July, a total of 89 cases of admissions to our hospital and outside the hospital GOP referral refractory teeth Sui periapical lesions cases, a total of 106 root canal.
1.2 Devices
Root canal surgery microscope (dentistry Operation microscope,Dental (dentistry) Operating (operation,surgical,surgery) microscope); ultrasonic root canal treatment, ultrasonic working tip; microscopic reaming needle; probing teeth Sui; microscope dedicated surface reflection mouth mirror root canal surgery; rubber dam;: 8 #, 10 # K filing, EDTA paste.
1.3 Methods
Observe whether the symptoms of dental (dentistry Operation microscope,Dental (dentistry) Operating (operation,surgical,surgery) microscope)fear before using dental microscope surgery(Dental (dentistry) Operating (operation,surgical,surgery) microscope), the establishment of the medical records of all cases operating under rubber dam. Before the beginning of the operation, carefully read the preoperative X-ray film to understand the root canal morphology, root canal wall thickness, root canal blockage, break location and length of the instrument. Looking for a root canal mouth, or open up the calcified root canal: adjust the light source, Dental (dentistry) Operating (operation,surgical,surgery) microscope, the use of ultrasound tip to remove calcified dentin revealed root canal port, with the microscopic reaming needle and EDTA paste gradually dilate root canal removal The broken instruments: Dental (dentistry) Operating (operation,surgical,surgery) microscope, ultrasonic tip to remove broken instruments around the root canal wall dentin, it gradually loosened up and pop-under ultrasonic vibration. Removal of zinc phosphate water door D, the plasticizing liquid, gutta percha: under a microscope, using appropriate ultrasonic tip vibration broken root canal
Of obstruction, to get through the root canal. Mandibular second molars "C" shaped canal preparation: under a microscope using ultrasonic instruments with hand or machine endodontic instruments, preparation of the root canal and
Isthmus.
1.4 Data Retention
The use of digital image acquisition card storage on the computer, or use the built-in lens optical camera, each of the cases were taken before surgery, postoperative X-ray.
2 Results
The dental surgical microscope (dentistry surgery microscope,Dental (dentistry) Operating (operation,surgical,surgery) microscope)clinical application results
The statistics overall success rate of 86%.
3 Discussion
Through the DOM so difficult root canal treatment in our hospital evaluation, success rate of 86%. Instrument fracture in the root canal root canal preparation was 2.02% -2.61% [1], often cause patient disputes. Removal of broken instruments surgery to enhance communication. We remove the broken needle is mostly located in the root in 1/3, and also individual located in apical 1/3. However, fewer cases, a high success rate, instrument fracture location is significant factors that affect the success rate of treatment and duration of treatment, whether in the Dental (dentistry) Operating (operation,surgical,surgery) microscope (dentistry surgery microscope,dentistry surgical microscope,
dentistry operating microscope)fully exposed broken instruments, the operator cleaning observe the entire
The course of treatment is a prerequisite for microscopic root canal treatment success. Principle, as long as it is fully exposed to the full length of the broken instruments, 1/3 will be able to remove the broken material [2] root canal calcification is more common in clinical practice, mainly for small developing unclear X-existing on-chip root canal or root canal; 30 Dental (dentistry) Operating (operation,surgical,surgery) microscope(dentistry surgery microscope,dentistry surgical microscope,
dentistry operating microscope), using ultrasound work sharp removal the calcified dentin lighter in color, by means of EDTA paste root calcification microscopic root canal treatment, found most of the root canal calcification in the apical 1/3, 8 #, 10 # K filing, can dredge the root canal. In the visual case, a more accurate judgment of the cutting portion of the dentin, and effectively avoid the occurrence of the offset and the root of the root canal wall perforation. Years for the treatment of dry Sui, to be crowns, to do root canal treatment, root canal calcification, mostly molars unshaded apical root canal curvature, calcification heterogeneity (dental operating microscope) Dental (dentistry) Operating (operation,surgical,surgery) microscope, it is difficult to distinguish shades of color ultrasound to get through to the apical 1/3, for each direction is difficult to grasp, not to continue treatment to avoid root canal side wear using the DOM in the treatment of a variety of causes root canal clogged removal of root canal fillings and broken instruments in the evaluation a success rate of 100%, the root canal filling gutta percha, zinc phosphate or plasticizing blockages in the DOM visualization circumstances, using ultrasound tip blind to get through, causing the risk of root canal side wear DOM looking for a unique effect of missing root canal alignment clog its vibration broken, you can expand through root canal [3], to avoid the traditional treatment. Omissions root canal on a segment of the root canal calcified root canal mouth ectopic or too small medullary cavity entrance. Occurs most frequently missing mesiobuccal root of maxillary molar root canal (mb2) or root canal (mb3), second or third root canal maxillary premolar, mandibular
The molars third mesial root canal as well as the second or third distal root canal [4]. Root fusion in conical or square cross-section on the root canal was the "C"-shaped root canal system known as the "C" shaped canal system commonly used in clinical buccolingual X-ray diagnosis is difficult using conventional root canal treatment technology preparatory root canal may occur when part of the root canal wall is over-preparation, while the other Ministry
Failure to clean up the phenomenon of sub root canal wall. The form of the root canal orifices clear vision microscopic root canal treatment technology for enhanced light source root canal preparation and amplification conditions under avoid excessive
Tooth preparation, when the upper part of the root canal mouth open, light deep into the root canal, and easy to find residual necrotic tissue and dentin debris, to facilitate the identification of the site and the effect of the root canal.
Dental operating microscope (Dental (dentistry) Operating (operation,surgical,surgery) microscope) with the relevant equipment can make more refractory tooth root canal treatment, so as to preserve the tooth.
References
[1] XIA Ning, Zhao Xinchen, high Xiaoyan, root canal treatment, 75 cases of the instrument fracture of clinical analysis [J] Oral Medicine. Aspect, 1999.15 (2
) 103 ~ 105.
[2] Ling Jun-qi, Xi Wei. Microscopic root canal treatment efficacy and influencing factors [J] of Shanghai Oral Medicine, 2006,15 (1): 1-6.
[3] Ling Jun-qi, Xi Wei, Gao Yan, the application root canal microscope and ultrasonic instruments processing blocking the evaluation of the efficacy of root canal [J] Journal of Oral Medicine
Journal, 2003,38 (5): 9-11.
[4] Fan Bing. Microscopic root canal treatment dental(Dental (dentistry) Operating (operation,surgical,surgery) microscope)(dentistry surgery microscope,dentistry surgical microscope,
dentistry operating microscope) endodontics. 2 Beijing: People's Health Publishing House, 2003:270 ~ 276 Keywords
: Surgical microscope root canal treatment ultrasonic instruments