Bacteriologic evaluation of the efficacy of mechanical root canal instrumentation in endodontic therapy
The presence of microorganism in fifteen single‐rooted teeth, with periapical lesions, was studied throughout an entire amount of treatment. the foundation canals were irrigated with physiological isosmotic solution throughout instrumentation. No medication solutions or dressigs were used. microorganism were found all told irnitial specimens kind the teeth (median numver of microorganism cell 4×105; vary one02‐107) and also the variety of strains within the specimens ranged from 1 to ten.88% of the strains were anaerobic. the foremost ordinarily isolated species were: Peptostreptococcus micros, Peptostrcptococcus anacrobius, Fusobacterium nucleatum, bacteria genus oralis, bacteria genus melaninogenicus subsp. intermedius and eubacteria alactolyticum. [1]
Bonding to root canal: structural characteristics of the substrate
PURPOSE: to judge in vitro the dentin morphology in root canals in terms of tube-shaped structure orientation, density and increase in expanse when etching. MATERIALS AND METHODS: Thirty anterior teeth were divided in three teams at random: the samples of cluster one were accustomed study cannular morphology in SEM. teams two and three samples were incised with thirty second orthophosphoric acid. The teeth in cluster two were examined by SEM while not any treatment. The samples in cluster three were treated with a bonding system and fiber posts were luted into the canal. These teeth were then processed for analysis of hybrid layer formation and organic compound tags in dentin tubules. The observations were created in step with location within the root dentin, tube-shaped structure density was calculable, and therefore the increase in space on the market for bonding when etching was calculated. [2]
Long‐term calcium hydroxide as a root canal dressing may increase risk of root fracture
It has been planned (Cvek 1992) that immature teeth area unit weakened by filling of the basis canals with hydrated lime dressing and gutta‐percha. The aim of this study was to check the hypothesis that dentin in reality with hydrated lime would show a discount in fracture strength once a particular amount of your time. Immature articulator incisors from sheep were extracted and divided into 2 experimental teams. cluster 1: the pulps were extirpated via the top opening. [3]
Effectiveness of passive ultrasonic irrigation on periapical healing and root canal disinfection: a systematic review
Objectives to guage the effectiveness of passive unhearable irrigation (PUI) compared with non-activated irrigation (NAI) on periapical healing and passageway medical aid.
Data supply A comprehensive search while not restrictions was performed within the following systematic electronic databases: PubMed, Scopus, Cochrane, net of Science, ScienceDirect and OpenGrey. further studies were sought-after through hand-searching within the main dentistry journals. [4]
The Effect of Root Canal Irrigant Solutions and Different Filling Periods on Microleakage of Resin Composite (An In vitro Study)
Aims: Chemical irrigants employed in odontology treatments, could cause changes within the composition of the dentin surface and have an effect on its interaction with organic compound composite. blanching agent and antiseptic gluconate (CHX) square measure common passageway Irrigant solutions. blanching agent and CHX have a possible of antimicrobial activity however CHX is a smaller amount venomous compared with blanching agent. therefore CHX could also be thought of as a decent various for blanching agent irrigant answer. The aim of this study was to check the consequences of various passageway irrigation solutions succeeding odontology medical aid on microleakage of clearfil S3 bond and Z250 organic compound composite restoration once applying immediate or delayed periods. [5]
Reference
[1] BYSTRÖM, A. and SUNDQVIST, G., 1981. Bacteriologic evaluation of the efficacy of mechanical root canal instrumentation in endodontic therapy. European Journal of Oral Sciences, 89(4), pp.321-328. (Web Link)
[2] Ferrari, M., Mannocci, F., Vichi, A., Cagidiaco, M.C. and Mjör, I.A., 2000. Bonding to root canal: Structural characteristics of the substrate. American Journal of Dentistry, 13(5), pp.255-260. (Web Link)
[3] Andreasen, J.O., Farik, B. and Munksgaard, E.C., 2002. Long‐term calcium hydroxide as a root canal dressing may increase risk of root fracture. Dental Traumatology, 18(3), pp.134-137. (Web Link)
[4] Effectiveness of passive ultrasonic irrigation on periapical healing and root canal disinfection: a systematic review
Emmanuel J. N. L. Silva, Gabriela Rover, Felipe G. Belladonna, Daniel R. Herrera, Gustavo De-Deus & Tatiana K. da Silva Fidalgo
British Dental Journalvolume 227, pages228–234 (2019) (Web Link)
[5] Daneshkazemi, A., Modabber, M., Akhavan, M., Daneshkazemi, P. and Mirhosseini, F. (2019) “The Effect of Root Canal Irrigant Solutions and Different Filling Periods on Microleakage of Resin Composite (An In vitro Study)”, Journal of Pharmaceutical Research International, 24(6), (Web Link)