Comparison of Coronal Leakage of Different Root Canal Obturation Techniques

Abstract

The aim of this study was to compare the coronal leakage of different root canal obturation techniques. In this study, 70 mandibular premolar teethwere used. Sixty teeth were divided into 4 groupsconsisting of 15 teeth. After preparation, the rootcanals were obturated with lateral condensation,System-B, Thermafil and MicroSeal root canalobturation systems. After obturation of the rootcanals the teeth were incubated in 100% humidityat 37ºC for 10 days to allow the sealer to set completely. After preparation of the leakage model system, india ink was placed in the coronal chambersand incubated in 100% humidity at 37ºC for 30days. The teeth were sectioned longitudinally, andthe maximum extent of leakage was measuredusing a stereomicroscope at x10 magnification. Theresults were analysed statistically using one wayANOVA and Bonferroni test. According to the results of our study, SystemB showed less dye leakage than Thermafil and thedifference was statistically significant p0.01

Keywords

• Lateral condensation, System-B, Thermafil, MicroSeal, Coronal Leakage

Farklı kök kanal dolgu tekniklerinin koronal sızıntılarının karşılaştırılması

Abstract

Bu çalışmanın amacı, çeşitli kök kanal dolgutekniklerinin boya penetrasyon yöntemi kullanılarak koronal sızıntılarının karşılaştırılmasıdır Çal›şmam›zda, 70 adet tek köklü alt premolar dişler kullan›ld›. Altm›ş adet diş 15’erli 4 gruba ayr›ld›. Kök kanallar›, lateral kondenzasyon, System-B, Thermafil ve MicroSeal kanal dolgu sistemleri ile dolduruldu. Kanallar doldurulduktan sonra patlar›n sertleşmesi için dişler 37ºC’de %100 nemli ortamda 10 gün süreyle etüvde bekletildi. Ependorf tüplerinin içine Çini mürekkebi konuldu ve örnekler 30 gün süre ile 37ºC’de etüvde bekletildi. 30 günün sonunda dişler düzenekten söküldü ve elmas diskler yard›m›yla uzunlamas›na ikiye ayr›ld›. Elde edilen kesitler x10 büyütmede stereomikroskop alt›nda incelendi ve lineer olarak boya penetrasyon miktar› ölçüldü. Elde edilen ölçümler, tek yönlü varyans analizi ANOVA ve Bonferroni testi ile istatistiksel olarak değerlendirildi. Çal›şmam›zdan elde edilen bulgular sonucunda koronal boya s›z›nt›s› yönünden System-B ile doldurulan kanallarda, Thermafil’e göre daha az boya s›z›nt›s› olduğu gözlenmiştir p0.01 .

Keywords

• Lateral kondenzasyon, System-B, Thermafil, MicroSeal, koronal s›z›nt›.

References

1. Alaçam T. Endodonti. 2.baskı. Ankara: Ba- rış Yayınları; 2000; s: 451-94.
2. Chohayeb AA. Comparison of conventional root canal obturation techniques with Thermafil obturators. J Endodon 1992; 18:10-2.
3. Stock CJR, Walker RT, Gulabivala K, Goodman JR. Endodontics 2nd ed. London: Mosby- Wolfe. Chapter 9 1997; s:151-76.
4. Budd CS, Weller RRN, Kulild JC. A com- parison of thermoplasticized injectable gutta-percha obturation techniques. J Endodon 1991; 17:260-4.
5. Nguyen TN. Obturation of the root canal sys- tem. In: Cohen S, Burns RC (eds). Pathways of the Pulp. St Louis: Mosby, 1994: 219-271.
6. Kytridou V, Gutmann JL, Nunn MH. Adaptation and sealability of two contemporary obturation techniques in the absence of the dentinal smear layer. Int Endod J 1999; 32:464-74.
7. Gençoğlu N, Samani S, Günday M. Dentinal wall adaptation of thermoplasticized gutta-percha in the absence or presence of smear layer: a scanning electron microscopic study. J Endod 1993; 19:558- 62.
8. Schilder H. Filling root canals in three dimensions. Dent Clin North Am 1967; 11:723-44.

9. Brosco VH, Bernardineli N, Moraes IG. ‘In vitro’ evaluation of the apical sealing of root canals obturated with different techniques. J Appl Oral Sci 2003; 11:181-5.
10. Venturi M. Evaluation of canal filling after using two warm vertical gutta-percha compaction techniques in vivo: a preliminary syudy. Int Endod J 2006; 39:538-46.
11. McRobert AS, Lumley PJ. An in vitro investigation of coronal leakage with three gutta- percha backfilling techniques. Int Endod J 1997; 30:413-7.
12. Gilbert SD, Witherspoon DE, Berry CW. Coronal leakage following three obturation tech- niques. Int Endod J 2001; 34:293-9.
13. Torabinejad M, Ung B, Kettering JD: In vitro penetration of coronally unsealed endodonti- cally treated teeth. J Endodon 1990; 16:566-9.
14. Khayat A, Lee SJ, Torabinejad M. Human saliva penetration of coronally unsealed obturated root canals. J Endodon 1993; 19:458-61.
15. Shipper G, Trope M. In vitro microbial leakage of endodontically treated teeth using new and standart obturation techniques. J Endodon 2004; 30:154-8.
16. Gilhooly RMP, Hayes SJ, Bryant ST, Dummer PMH. Comparison of cold lateral conden- sation and a warm multhiphase gutta-percha tech- nique for obturating curved root canals. Int Endod J 2000; 33:415-20.
17. Maggiore F. Microseal system and modi- fied technique. Dent Clin N Am 2004; 48:217-64.
18. Walton RD, Johnson WT. Obturation. In: Principles and Practise of Endodontics 2nd edition Walton RE, Torabinejad M. Philedelphia: WB Saunders Co. 1996; s:234-59.
19. De Almedia WA, Leonardo MR, Filho MT, Silva LAB. Evaluation of apical sealing of three endodontic sealers. Int Endod J 2000; 33:25-7.
20. MiletiJ L, Mehicic GP, Marsan T, Tambic- Andrasevic A, Plesko S, Karlovic Z, Anic I. Bacterial and fungal microleakage of AH-26 and AH-Plus root canal sealers. Int Endod J 2002; 35:428-32.
21. De Moore RJG, De Bruyne MAA. The long term sealing ability of AH-26 and AH-Plus used with three gutta-percha obturation techniques. Quintes- sence Int 2004; 35:325-31.
22. De Moor RJG, De Boever JG. The sealing ability of an epoxy resin root canal sealer used with five gutta-percha obturation techniques. Endod Dent Traumatol 2000; 16:291-7.
23. Valli KS, Rafeek RN, Walker RT. Sealing capacity in vitro of thermoplasticized gutta-percha with a solid core endodontic filling technique. Endod Dent Traumatol 1998; 14:68-71.
24. De Moor RJG, Hommez GMG. The long- term sealing ability of an epoxy resin root canal se- aler used with five gutta percha obturation tech- niques. Int Endod J 2002; 35:275-82.