Retreatment of Failed Regenerative Endodontic Therapy: Outcome and Treatment Considerations.

Introduction Regenerative endodontic therapy (RET) has been suggested for treating immature necrotic teeth, and failures after RET may be observed during follow-up examinations, even two years after the initial treatment. The study aimed to examine the outcomes of RET and suggest a decision-making guide for the retreatment of failed cases. Methods Around 414 endodontically treated immature teeth from patients aged six and 17 were screened to identify eight patients who presented with a failed RET.

Retreatment of a Failed Regenerative Endodontic Treatment in an Immature Tooth with a Horizontal Root Fracture: A Case Report.

Unlabelled: Regenerative endodontic treatment (RET) has been suggested for the treatment of traumatized necrotic immature teeth. There are only a few reports of using RET to treat a horizontal root fracture. The aim of this paper is to describe successful regenerative retreatment in a tooth with a horizontal root fracture and dens invaginatus.

A Comparative Ex Vivo Study on Apex Locator Precision in Mature Teeth and Immature Teeth With Divergent Canals.

Aim: This study investigates the accuracy of an apex locator in mature and immature teeth with divergent root canals ex vivo.

Materials And Methods: Fifty extracted premolar teeth were utilized for the study, with 25 mature teeth (Nolla stage 9 or 10) and 25 immature teeth (Nolla stages ≤ 8). The discrepancies between the actual length (AL) and the electronic length (EL), measured using a Bingo 1020 apex locator, were compared and analyzed.

The Outcome of Decoronation in Severe Cases of External Cervical Root Resorption in Young Patients.

This study examines decoronation as a treatment option for teeth with progressive external cervical root resorption (ECR). Six young patients aged 9.5-13, with a total of nine incisor teeth affected by ECR due to previous dental trauma, were treated by decoronation.

Regenerative Endodontic Procedures in Immature Teeth Affected by Regional Odontodysplasia.

Introduction: Regional odontodysplasia (ROD) is a rare developmental disorder characterized by hypo-mineralization and hypoplasia of enamel and dentin. Symptoms include poorly developed tooth buds, delayed eruption of permanent teeth in affected quadrants, and ghost teeth. The affected teeth often become necrotic due to abnormal enamel and dentin development, making them susceptible to caries and infection.

The consequences of orthodontic extrusion on previously intruded permanent incisors-A retrospective study.

Aim: The aim of this study is to compare the adverse effects that occur after orthodontic extrusion of teeth that have been traumatically intruded with those of similar teeth that have not experienced any trauma.

Background: The outcome of incisors intrusion can be affected by the patient's age, extent of injury, root development, and malocclusion. Orthodontic extrusion is a potential solution, but it may also cause complications.

Enhanced socket preparation during autotransplantation: a new treatment protocol.

Objective: Tooth autotransplantation (AT) is a viable option for the replacement of unrestorable or missing teeth. Recently, the use of a 3D replica of a donor tooth constructed from CBCT scans was described. The model is made to assess the recipient site's size and minimize the required extraoral time of the donor tooth after extraction.

An Assessment of the Effects of Orthodontic Treatment after Apexification of Traumatized Immature Permanent Teeth: A Retrospective Study.

Introduction: Root resorption may occur in traumatized necrotic teeth that have undergone apexification after orthodontic treatment. This study examined the effects of orthodontic treatment on the outcome of apexification.

Methods: This retrospective study included 36 children presenting with anterior permanent traumatized teeth with immature roots who were treated by apexification and root canal treatment.

[Revascularization? Only as the last resort!].

Revascularization has been suggested for treatment of necrotic immature permanent teeth. The desirable outcome of the treatment is continuous growth of the root, maturation of the dentin walls underneath the cervical seal and apical closure. Despite of increasing numbers of case reports, a uniform treatment protocol has not been set.

Incidence of cholesterol in periapical biopsies among adolescent and elderly patients.

Introduction: Cholesterol clefts are common histologic findings in periapical biopsies; they have a reported incidence in periapical periodontitis of up to 44%. Cholesterol crystals are also recognized in advanced atherosclerotic plaques in humans. Male sex, genetic abnormalities, and age have been associated with advanced atherosclerotic lesions.

The effect of dentin on the pulp tissue dissolution capacity of sodium hypochlorite and calcium hydroxide.

Introduction: Sodium hypochlorite (NaOCl) and calcium hydroxide (Ca[OH]2) have tissue dissolution capacity. The aim of this study was to evaluate the potential effect of dentin on their tissue dissolution capacity in a novel dentin model.

Methods: Dentin models were prepared from 25 freshly extracted human molar teeth; the crowns were separated from the roots, and a rectangular inner shape was prepared.

Synergistic effect of Er:YAG laser irradiation in combination with chlorhexidine on the viability of Enterococcus faecalis: an in vitro study.

Objective: This study aimed to examine the potential synergistic effect of laser and chlorhexidine (CHX) applications on the growth of Enterococcus faecalis.

Background Data: CHX has been recommended for root canal irrigation because of its antibacterial properties. Er:YAG 2.

[Electronic Apex Locator as a dental instrument].

Electronic Apex Locators (EAL) have become widely used in the last decade. The first apex locator was introduced in 1962, based on a constant electrical resistance (6.5 K.

Odontogenic sinus tracts: a cohort study.

Objective: To determine the prevalence,location, and distribution of sinus tracts in patients referred for endodontic consultation.

Method And Materials: This cohort study included 1,119 subjects referred for endodontic consultation, 108 of whom presented with sinus tracts. Following clinical and radiographic examination, the diameter of the rarifying osteitis lesion on the radiograph was measured and the path and origin of the sinus tracts determined.

Restoration of endodontically treated teeth review and treatment recommendations.

Coronal restorations and posts can positively influence the long-term prognosis of teeth following root canal therapy. Final sealing the canal by placing an appropriate post and core will minimize leakage of oral fluids and bacteria into the periradicular area and is recommended as soon as possible after completion of root canal filling. Glass ionomer or MTA placed over the residual root canal filling after post space preparation may be effective to prevent bacterial leakage.

Antibacterial properties of four endodontic sealers.

The purpose of this study was to evaluate the antimicrobial effects of root canal sealers. The direct contact test (DCT) was used to assess the antibacterial properties of AH plus, Apexit Plus, Epiphany SE, and RoekoSeal when in contact with Enterococcus faecalis. The materials were examined immediately after setting and 1, 2, 7, and 14 days after aging in phosphate-buffered-saline.

The effect of CO(2) laser on the microhardness of human dental hard tissues compared with that of the high-speed drill.

Objective: The purpose of this study was to examine the effect of 9.6-microm CO(2) laser energy on the microhardness of human dental hard tissues compared with that of high-speed drill cavity preparation, and to determine the applicability of this laser in clinical treatment.

Materials And Methods: A total of 10 caries-free human single-rooted teeth were used for this study.

The effect of CO2 Laser on the permeability of dentinal tubules: a preliminary in vitro study.

Objectives: The purpose of this in vitro study was to determine whether there is a change in dentin permeability following 9.6-microm CO(2) laser irradiation and high-speed drilling.

Materials And Methods: Twenty permanent, intact, non-carious molars were selected.

Healing of a fibrous dysplastic lesion in a permanent molar after endodontic therapy.

Fibrous dysplasia presents in two forms: monostotic and polyostotic. Both forms are more widespread among children and juveniles and may result in facial asymmetry. Neoplastic bone lesions, localized over the root apices and mimicking periapical pathosis, have been observed.

Retrieval of amalgam from the root canal space.

Removal of foreign objects from the root canal can be very frustrating. The use of a variety of instruments and techniques has been suggested for the retrieval of obstacles from root canals during endodontic treatment. This article describes a method for retrieving a large mass of amalgam restoration that was wedged into the root canal.

Antibacterial properties of temporary filling materials.

The purpose of this study was to investigate the antibacterial properties of temporary fillings. The direct contact test (DCT) was used to evaluate the antibacterial properties of Revoltek LC, Tempit, Systemp inlay, and IRM. These were tested in contact with Streptococcus mutans and Enterococcus faecalis.