EVALUATION OF THE ROOT CANAL DIAMETER IRREGULARITIES OF MANDIBULAR PREMOLARS

Year 2015, Volume: 25 Issue: 1, 40 - 46, 21.05.2015

İsmail Uzun Buğra Güler Taha Özyürek Fatih Başoğlu

https://doi.org/10.17567/dfd.34850

Cited By: 1

Abstract

Aim: One of the goals of endodontic treatment is to prepare the root canals mechanically. Recent studies showed that all preparation techniques that we use commonly just prepare only 40-60% of the root canal system. Also that ratio is much for oval canals. The aim of this in vitro study was to measure root and root canal diameters, root and root canal diameter ratios at different levels in mandibular premolars. Material and Method: Five hundred mandibular premolar teeth were used for this study. Teeth were randomly divided into groups of threes and with the help of standard device each group's mesio-distal and bucco-lingual radiographs were taken. Then radiographs were analysed with CorelDRAW Graphics Suite X6 software. Data were statistically evaluated. Result: In 201 (20.1%) of the 1000 cross sections investigated, a long oval canal (the long canal diameter was at least 2 times the short canal diameter) was identified. Other 746 (74.6%) cross sections were oval and round. Only 53 (5.3%) examined samples were irregular. Results revealed that root canals of mandibular premolars were generally oval and round. Conclusion: According to the findings, it seems that preparation and disinfection of the root canals of mandibular premolars are difficult because of the complex anatomy and morphology of their root canal systems

Keywords

oval canal, mandibular premolar, endodontics

MANDİBULAR PREMOLAR DİŞLERİN KANAL ÇAPLARINDA GÖRÜLEN DÜZENSİZLİKLERİN DEĞERLENDİRİLMESİ

Abstract

Amaç: Kök kanal tedavisinin amaçlarından bir tanesi de kök kanallarının kemo-mekanik olarak şekillendiril- mesidir. Günümüzde kullanılan preperasyon teknik- leriyle kök kanal sisteminin %40 ile %60’ının şekillendirilemediği gösterilmiştir. Bu oran oval kanallarda daha yüksektir. Bu çalışmada mandibular premolar dişlerde görülen oval kanal insidansının ortaya koyulması amaçlanmaktadır.

Gereç ve yöntem: Bu çalışmada 500 adet mandibular premolar diş kullanıldı. Dişler rastgele üçerli gruplara ayrılarak, dişlerin hazırlanmış olan düzenek yardımıyla mesio-distal ve bukko-lingual yönde radyografileri alındı. Alınan radyografiler CorelDRAW Graphics Suite X6 programı ile analiz edildi. Elde edilen veriler istatistiksel olarak değerlendirildi.

Bulgular: İncelenen 1000 adet ölçümün 201 (%20,1) tanesinde uzun oval kanala rastlandı. Diğer 746 (%74,6) tanesinde yuvarlak ve oval kanallara rastlandı. Ölçümlerin yalnız 53 (%5,3) tanesinde düzensiz kanala rastlandı. Genel olarak kanal şekillerinin oval ve yuvarlak olduğu gözlendi.

Sonuç: Çalışmamızda elde ettiğimiz sonuçlara göre mandibular premolar dişlerin kök kanal sistemlerindeki kompleks anatomi ve morfoloji nedeniyle, bu dişlerin kök kanallarının şekillendirilmesi ve temizlenmesinin güçleşeceği düşünülmektedir.

Keywords

oval kanal, mandibular premolar, endodonti

References

• Loest C. Quality guidelines for endodontic treatment: consensus report of the European Society of Endodontology. Int Endod J 2006;39:921-30.
• Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endod 2004;30:559-67.
• Peters O, Schönenberger K, Laib A. Effects of four Ni–Ti preparation techniques on root canal geometry tomography. Int Endod J 2001;34:221-30. by assessed micro computed
• Sert S, Aslanalp V, Tanalp J. Investigation of the root canal configurations of mandibular permanent teeth in the Turkish population. Int Endod J 2004;37:494-9.
• Miyoshi S, Fujiwara J, Tsuji YH, Nakata T, Yamamoto K. Bifurcated root canals and crown diameter. J Dent Res 1977;56:1425
• Trope M, Elfenbein L, Tronstad L. Mandibular premolars with more than one root canal in different race groups. J Endod 1986;12:343-5.
• Walker RT. Root canal anatomy of mandibular first premolars in a southern Chinese population. Dent Traumatol 1988;4:226-8.
• Schilder H. Cleaning and shaping the root canal. Dent Clin North Am 1974;18:269-96.
• Jou Y-T, Karabucak B, Levin J, Liu D. Endodontic working width: current concepts and techniques. Dental Clinics of North America 2004;48:323-35.
• Gani O, Visvisian C. Apical canal diameter in the first upper molar at various ages. J Endod 1999;25:689-91.
• Mauger MJ, Schindler WG, Walker III WA. An evaluation of canal morphology at different levels of root resection in mandibular incisors. J Endod 1998;24:607-9.
• Wu M-K, R'oris A, Barkis D, Wesselink PR. Prevalence and extent of long oval canals in the apical third. Oral Surg, Oral Med, Oral Pathol Oral Radiol Endod 2000;89:739-43.
• Paqué F, Balmer M, Attin T, Peters OA. Preparation of oval-shaped root canals in mandibular molars using nickel-titanium rotary instruments: a micro- computed 2010;36:703-7. study. J Endod
• Grande NM, Plotino G, Butti A, Messina F, Pameijer CH, Somma F. Cross-sectional analysis of root canals prepared with NiTi rotary instruments and stainless steel reciprocating files. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007;103:120- 6.
• Rödig T, Hülsmann M, Mühge M, Schäfers F. Quality of preparation of oval distal root canals in mandibular instruments. Int Endod J 2002;35:919-28. using nickel‐ titanium
• Vicente Baroni Barbizam J, Fernando Fariniuk L, Andréia Marchesan M, Djalma Pecora J, Sousa- Neto MD. Effectiveness of manual and rotary instrumentation techniques for cleaning flattened root canals. J Endod 2002;28:365-6.
• Wu MK, Wesselink P. A primary observation on the preparation and obturation of oval canals. Int Endod J 2001;34:137-41.
• Zehnder M. Root canal irrigants. J Endod 2006;32:389-98.
• ElAyouti A, Chu AL, Kimionis I, Klein C, Weiger R, Löst C. Efficacy of rotary instruments with greater taper in preparing oval root canals. Int Endod J 2008;41:1088-92.
• Weiger R, ElAyouti A, Löst C. Efficiency of hand and rotary instruments in shaping oval root canals. J Endod 2002;28:580-3.
• Grande NM, Plotino G, Pecci R, Bedini R, Pameijer CH, Somma F. Micro–computerized tomographic analysis of radicular and canal morphology of premolars with long oval canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008;106:70-6.
• Jain A, Bahuguna R. Root canal morphology of mandibular first premolar in a gujarati population- an in vitro study. Dent Res J 2011;8:118.
• Mozzo P, Procacci C, Tacconi A, Martini PT, Andreis IB. A new volumetric CT machine for dental imaging based on the cone-beam technique: preliminary results. Eur Radiol 1998;8:1558-64.
• Cotton TP, Geisler TM, Holden DT, Schwartz SA, Schindler WG. Endodontic applications of cone- beam 2007;33:1121-32. J Endod
• Patel S. New dimensions in endodontic imaging: Part 2. Cone beam computed tomography. Int Endod J 2009;42:463-75.
• Berman LH, Hartwell GR. Diagnosis. In: Hargreaves KM, Cohen S. Pathways of the Pulp. 10th Ed. Mosby Elsevier, Missouri: 2011. p. 22-3
• Farman AG, Farman TT. A comparison of 18 different x-ray detectors currently used in dentistry. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2005;99:485-9.
• Li G, Berkhout W, Sanderink G, Martins M, Van Der Stelt P. Detection of in vitro proximal caries in storage phosphor plate radiographs scanned with different resolutions. Dentomaxillofac Radiol 2008;37:325-9.
• Wenzel A, Haiter-Neto F, Gotfredsen E. Influence of spatial resolution and bit depth on detection of small caries lesions with digital receptors Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2007;103:418-22.
• Baugh D, Wallace J. The role of apical instrumentation in root canal treatment: a review of the literature. J Endod 2005;31:333-40.
• Tan BT, Messer HH. The quality of apical canal preparation using hand and rotary instruments with specific criteria for enlargement based on initial apical file size. J Endod 2002;28:658-64.
• Wu M-K, Wesselink PR. Efficacy of three techniques in cleaning the apical portion of curved root canals. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 1995;79:492-6.
• Bartha T, Kalwitzki M, Löst C, Weiger R. Extended apical enlargement with hand files versus rotary NiTi files. Part II. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006;102:692-7.
• Weiger R, Bartha T, Kalwitzki M, Löst C. A clinical method to determine the optimal apical preparation size. Part I. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006;102:686-91.