The purpose of this study was to compare regional bond strength at middle and cervical thirds of the root canal among glass fiber-reinforced composite (FRC) endodontic posts luted with different cements, using the push-out test. To compare the performance (retention) of two types of luting cements polycarboxylat cement and Glass ionomer cement used to cement translucent fibre post. and To compa...

A narrow passage called the cervical canal (or endocervical canal) goes from your vagina to the inside of your womb. This is normally kept tightly shut. However, it allows blood to flow out from your uterus during a period and sperm to travel inside when you have sex. It opens very wide during labour when you have a baby. The surface of your cervix is covered with skin-like cells. There are als...

Aims During biomechanical preparation of the root canal system, the cutting action of instruments on dentine result in the formation of hard-tissue debris, which can be packed in some areas of the root canal system, mainly in anatomical variations as isthmus, branches and flattening (1, 2). Accumulated hard-tissue debris in the root canal system may compromise thorough disinfection and filling ...

BACKGROUND Although two types of cervical cryotherapy tips are widely used, there have been no randomized prospective comparison studies reported in the medical literature. Shallow conical tip proponents theorize that a greater depth of freeze near the os yields better treatment of cervical intraepithelial neoplasia (CIN) without elevating the squamocolumnar junction into the cervical canal. Fl...

In dentistry, root canal therapy is the internal cleaning of a complex channel network contained within the tooth. The aim is to disinfect the canal and remove any remaining bacteria to prevent further infection prior to root filling. Irrigant solutions play an important role in this procedure as they allow canal debridement. Sodium hypochlorite (NaOCL) is an irrigant that is clinically recomme...

Instrument fracture within the root canal during root canal treatment is an unwanted and frustrating complication. The fractured segment may hinder cleaning and shaping procedures with potential impact on prognosis of treatment. Fracture of endodontic instrument often results from incorrect use or overuse. If breakage occurs clinically, the patient should be informed of the incident and conside...

For a restorative dentist as well as an Endodontist, the dental operating microscope offers a large number of benefits such as: improved diagnosis especially in case of cracked teeth; better visualization of pulp chamber, root canal orifices and calcifications present; identification of complex root canal systems; effective cleaning and shaping and its visualization thereafter; improved control...

Recognition of unusual variations in the canal configuration is critical because it has been established that the root with a single tapering canal and apical foramen is the exception rather than the rule. The early recognition of these configurations facilitates cleaning, shaping, and obturation of the root canal system. "C" configuration, which is an important anatomic variation, presents a t...

Anatomical variation in the number of roots and root canals can occur in any tooth. Aberrant morphology of the root canal system may hinder cleaning and shaping procedures, leading to failure of endodontic treatment. The aim of this paper is to show one an example of root canal anatomical variation. Mandibular canines usually have one root with a centrally located root canal; however, anatomica...

The purpose of this paper is to provide useful information that will enable dentists to predictably shape root canals for three-dimensional obturation of the root canal system. The information is intended to help clinicians better understand when and how to safely use Nickel-Titanium (NiTi) rotary shaping instruments. This article is intended to enhance clinical performance for all dentists who...