Vertical Root Fractures and Dentin Defects: Effects of Root Canal Preparation, Filling, and Mechanical Cycling

Barreto, Mirela Sangoi; Moraes, Rafael do Amaral; Rosa, Ricardo Abreu da; Moreira, Carlos Heitor Cunha; Só, Marcus Vinícius Reis; Bier, Carlos Alexandre Souza

doi:10.1016/j.joen.2012.05.002

Cited by 109 publications

(96 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Prolonged irrigation of the root canal with highly concentrated irrigant solutions (6,7) and long -term application of calcium hydroxide to the root canal are reported to decrease the strength of the dentin (8)(9)(10). Excessive pressure applied during root canal obturation is also seen as a cause of root fracture (11,12). Cracks caused during root canal preparation can be extended by the pressure of root canal obturation (13,14), thus greatly reducing fracture resistance (3).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures

Sugaya

Nakatsuka

Inoue

et al. 2015

Journal of Endodontics

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures

Sugaya

Nakatsuka

Inoue

et al. 2015

Journal of Endodontics

View full text Add to dashboard Cite

show abstract

“…12 Bu işlemler sırasında oluşan dentin defektlerinin ilerleyerek vertikal kök kırıklarına neden olabileceği düşünülmektedir.…”

Section: Discussionunclassified

“…12 Bu işlemler sırasında oluşan dentin defektlerinin ilerleyerek vertikal kök kırıklarına neden olabileceği düşünülmektedir. 11 Vertikal kök kırığı bulunan dişlerin prognozu oldukça kötüdür ve genellikle ilgili dişin çekimi gerekmektedir.…”

Section: Discussionunclassified

Incidence of Dentinal Defects after Preparation with Different Nickel Titanium Rotary File Systems

Özyürek¹,

Demiryürek²

2017

Turkiye Klinikleri J Dental Sci

View full text Add to dashboard Cite

ök kanalının biyomekanik olarak temizleme ve şekillendirme işlemi başarılı bir kök kanal tedavisinin en önemli aşamalarındandır.1 Gü-nümüzde kök kanalının temizlenmesi ve şekillendirilmesi amacıyla 83 Farklı Nikel Titanyum Döner Eğe Sistemleri ile Şekillendirme Sonrası Görülen Dentin Defekti İnsidansı Ö ÖZ ZE ET T A Am ma aç ç: : Revo-S, ProTaper Next ve Twisted File Adaptif NiTi eğelerinin mandibuler keser dişlerin kök kanallarının şekillendirilmesi sırasında dentin defekti oluşturma sıklıklarının karşılaştırılmasıdır. G Ge er re eç ç v ve e Y Yö ön nt te em ml le er r: : Yüz yirmi adet kök ucu gelişimi tamamlanmış, düz köklü mandibuler keser diş çalışmaya dâhil edildi. Otuz diş herhangi bir işlem yapılmadan negatif kontrol grubu olarak ayrıldı. Doksan diş her bir grupta 30 adet olacak şekilde üç gruba ayrıldı; ProTaper Next (PTN), Revo-S ve TF Adaptif (TFA) kullanılarak kök kanalları prepare edildi. Örneklerden su soğutması altında, dişin uzun aksına dik olacak şekilde apeksten 3, 6 ve 9 mm uzaklıkta üç adet kesit elde edildi. Elde edilen kesitler stereomikroskop altında x25 büyütme ile dentin defekti varlığı yönünden incelendi. Elde edilen veriler ki-kare testi kullanılarak istatistiksel olarak analiz edildi (p<0,05). B Bu ul lg gu ul la ar r: : Test edilen bütün NiTi eğe sistemlerinin kontrol grubuna göre istatistiksel olarak daha fazla dentin defekti oluşturduğu saptanmıştır (p<0,05). TFA sisteminin PTN ve Revo-S grubuna göre istatistiksel olarak daha az dentin defekti oluşturduğu bulunmuştur (p<0,05). Farklı seviyelerden alınan kesitler ile dentin defekti miktarı arasında bir korelasyon saptanmamıştır (p>0,05). S So on nu uç ç: : Çalışmamızda test edilen bütün NiTi eğelerin kök kanal dentininde defekte neden olduğu bulunmuştur. TFA sisteminin PTN ve Revo-S grubuna göre istatistiksel olarak daha az dentin defekti oluşturduğu bulunmuştur.A An na ah h t ta ar r K Ke e l li i m me e l le er r: : Endodonti; titanyum nikelid A AB BS S T TR RA AC CT T O Ob bj je ec ct ti iv ve e: : To compare the incidence of dentinal defect after root canal preparation using the Revo-S, ProTaper Next and Twisted File Adaptive NiTi files in mandibular incisor teeth. M Ma at te er ri ia al l a an nd d M Me et th ho od ds s: : 120 mandibular incisor teeth with mature apices and straight canals were included to the present study. 30 teeth were left unprepared (negative control group) and the remaining 90 teeth were assigned to the three root canal shaping groups (n=30): ProTaper Next (PTN), Revo-S and TF Adaptive (TFA). All the roots were sectioned perpendicular to the long axis at 3, 6 and 9 mm from the apex with a low-speed saw under water-cooling. The slices were then viewed through a stereomicroscope at 25x magnification. The presence of dentinal cracks was determined by photographing all samples using a digital camera. The obtained data were statistically analyzed by chi-square test (p<0.05). R Re es su ul lt ts s: : There were statistically difference between experimental groups and the control group according to the dentinal ...

show abstract

“…Prognosis of VRF is unfavorable, and they often result in bone loss and periodontal defects [2,12,14,15]. Presently, there is still a limited amount of treatment in extraction of root or resection of fractured tooth [3][4][5]12,16].…”

Section: Biomechanical Preparationmentioning

confidence: 99%

“…Previous studies have demonstrated that the main determining factors for the occurrence of root fractures are: the design of the spreaders [22], combined with the stress generated during compaction [18,23], canal width, canal taper, size and other characteristics of the tooth itself [23,24]. Moreover, pre-existing cracks, craze lines or incomplete fractures, especially those in direct contact with the root canal, may propagate and develop into fractures after the endodontic treatment [15].…”

Section: Biomechanical Preparationmentioning

confidence: 99%

Incomplete vertical root fracture associated with lateral compaction technique: a microscopic analysis

Chávez-Andrade¹

2013

BDS

View full text Add to dashboard Cite

Objective:This study evaluated the effects of root canal obturation employing lateral compaction technique and spreader load of 1.5 kg on the incidence of complete (CVRF) or incomplete vertical root fractures (IVRF). Material and Methods: Twenty-seven distal roots of extracted human mandibular molars were used. All root canals were prepared by biomechanical step-back technique and obturated by lateral compaction technique. The prepared roots were distributed into two groups: G1- experimental (n=17) and G2- control (n=10). During obturation, load of 1.5 kg was applied to a size 30 finger spreader. Pre- and post-obturation images of the coronal portion of the roots were captured by inverted digital microscopy and analyzed by one trained examiner. Data were evaluated by Fisher’s test (p < 0.05) using GrapH Pad Prism 5.0. Results: No roots exhibited CVRF. All fractures observed before and after obturation were IVRF or “other defects”. In G2 (control group), there was no increase of IVRF number. Interestingly, G1 presented an increase in the IVRF number to 70,59% in the 12 teeth out of 17 teeth studied. The statistical analysis showed that the mean of IVRF increased significantly in G1 when compared to G2 (p < 0.05). Conclusions: The application of a 1.5 kg spreader load during lateral compaction technique does not produce complete vertical root fractures, but may produce incomplete fractures or “other defects”.

show abstract

Vertical Root Fractures and Dentin Defects: Effects of Root Canal Preparation, Filling, and Mechanical Cycling

Cited by 109 publications

References 32 publications

Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures

Comparison of Fracture Sites and Post Lengths in Longitudinal Root Fractures

Incidence of Dentinal Defects after Preparation with Different Nickel Titanium Rotary File Systems

Incomplete vertical root fracture associated with lateral compaction technique: a microscopic analysis

Contact Info

Product

Resources

About