Thai Endodontic Journal

Statistics in Endodontics Part 3: Sampling Methods

อ.ทพ.สิทธิโชค โอศิริ — 2024-12-20

Abstract

Sampling is a crucial process in dental research, particularly in the field of endodontics. This article provides an overview of probability and non-probability sampling methods in the context of root canal treatment research. It covers the basic principles, procedures, advantages, and limitations of each method. The article also explains the application of various sampling techniques in endodontic research, including treatment outcome evaluation, studies of new materials and techniques, and surveys of patient and provider opinions. Additionally, it offers recommendations for researchers in selecting and applying appropriate sampling methods to enhance the reliability of research findings in endodontics and their clinical applications, considering research ethics, resource constraints, and practical feasibility.

Management of external pressure resorption associated with dentigerous cyst: A case report

Noppadol Sittithanaworakul — 2024-12-20

Pressure from cysts or tumors exerted on neighboring teeth may cause external surface resorption. Surgical removal of a cyst can compromise the vitality of the teeth by severing the nerve and blood supplies at the apices of the roots. In this case, a 60-year-old female presented with dull pain at the base of her nose and mobility of her anterior teeth. Teeth 11 and 21 were found to be associated with a dentigerous cyst of the embedded tooth (mesiodens) in the area. Tooth 21 exhibited clinical symptoms and a negative response to sensibility tests after the removal of embedded tooth and enucleation of the cyst, necessitating endodontic intervention. In contrast, the sensibility tests of tooth 11 recovered approximately two months after the surgical procedure. A follow-up appointment for sensibility testing and evaluation of clinical symptoms is suggested to determine the necessity of endodontic intervention for the tooth related to the temporary loss of sensibility resulting from the surgical procedures.

Single-file rotary system: current concepts and review of the tested parameters

Theerapon Nuntakarat — 2024-12-20

Single-file rotary instrumentation technique or the single-file rotary system was introduced as the alternative method in root canal instrumentation. As it benefits clinicians in simplicity of the technique, reduction of treatment time, eliminating operator’s fatigue during the procedure, being more cost-effective, and requiring less instruments to be used. The objectives of mechanical instrumentation can be fulfilled with this technique in which treatment effectiveness is also comparable to conventional instrumentation with multiple rotary instruments. With different available selection of products and advancement in its properties, the single-file rotary system was proved to be effective in several evaluated parameters. This article aims to review the current concept of single-file NiTi rotary systems, with available evidence in terms of shaping ability and cleaning ability, debris extrusion, cyclic fatigue resistance, and their effectiveness in endodontic retreatment.

The current application of guided endodontics

ทพญ.จิดาภา ยศตันติ — 2024-12-20

Currently, dentistry is being significantly impacted by the rapid advancement of digital technology. These technologies aid dentists in delivering more efficient patient care. In the field of endodontics, these technologies have been utilized in the form of guided endodontics to assist in accessing the pulp chamber, locating obliterated root canals, removing prefabricated posts in non-surgical retreatment, performing endodontic surgeries, and other applications within the scope of endodontics. A review of the relevant literature reveals that guided endodontics could enhance precision, reduce time in locating root canal system, preserve tooth structure and offer advantages in managing complex cases compared to conventional or freehand endodontic techniques. However, complications and limitations still persist in both non-surgical and surgical root canal treatment. Therefore, guided endodontics have the potential to be further developed for greater efficiency, accessibility, and becoming a viable choice for endotontic treatment.

Root Perforation Repair with Calcium Silicate Cements: Part 1 Basic Knowledge and Treatment Outcomes

Kanyarat Tungputsa — 2024-12-20

Root perforation can occur due to pathological conditions, iatrogenic factors during root canal treatment, or post-space preparation in the restorative procedure. The perforation creates a pathway of infection connecting the root canal system and the external root surface making endodontic treatment more complicated. Diagnosis of root perforation can be achieved through comprehensive clinical and radiographic evaluations. The classification of root perforations has been based on 1) the location of the root perforation, 2) the size of the root perforation, and 3) the time to repair the root perforation. The principles of managing root perforation involve eliminating any infection at the perforation site and sealing the perforation with a material that is biocompatible and provides a good seal. Currently, calcium silicate cements are used as root repair materials, with mineral trioxide aggregate (MTA) being the first widely adopted material due to its excellent sealing ability, antibacterial properties, and biocompatibility. However, MTA has drawbacks such as long setting time, difficult handling, and potential tooth discoloration. Therefore, new types of calcium silicate cement materials have been developed, maintaining the primary components of dicalcium silicate and tricalcium silicate, and used for root perforation repair. Evaluating the success of root perforation repairs is generally based on a combination of clinical and radiographic examinations. In the average follow-up period ranging from 6 to 168 months, the success rates of root perforation repair with calcium silicate cement materials (mostly repaired with original MTA) ranged from 73.3-100% according to the strict criteria (healed). The success rates were 100% according to the lenient criteria (healed or healing). Most studies observed a reduction in the size of periapical lesions within 6 months after treatment, and complete healing of the lesions within 12-24 months. However, late failures after treating root perforations can be observed in the 2-3 years range postoperatively or longer. Long-term follow-up of the treatment is necessary to ensure the stability of the repair without peri-radicular lesions or root fractures. The main prognostic factors to outcomes of root perforation repair will be further described in the next article (part 2).

Root Perforation Repair with Calcium Silicate Cements: Part 2 Predictive Factors to the Outcome and Prognosis

Kanyarat Tungputsa — 2024-12-20

Abstract

The success rates of root perforation repair with calcium silicate cements are 73.3-100% depending on the main prognostic factors. These factors are categorized into preoperative, intraoperative, and postoperative factors in the repair of root perforations using original mineral trioxide aggregate (MTA), which no clinical study in other calcium silicate materials has been found. Radiolucency adjacent to the perforation, location of perforation, size of perforation, probing depth related to the perforation, restorative status before perforation repair, treatment providers, quality of coronal restoration, and post or screw Insertion are among the reporting factors. For decision- making in the treatment, a prognosis of root perforation repair (favorable or unfavorable) has been proposed based on main preoperative factors that affect the success rate of root perforation repair, including (1) the presence of lesions at the root perforation site or periodontal pockets at positions related to the root perforation, (2) the size of root perforation, and (3) the location of the perforation.