Seven root canals in a deciduous maxillary molar detected by the dental operating microscope and micro-computed tomography

Geographical diversity in root canal anatomy of primary molars and its clinical implications: A systematic review and meta-analysis

BACKGROUND

Anatomical variability in primary molars across geographic regions presents significant challenges in pediatric endodontics. Regional differences in root canal morphology complicate diagnosis and treatment planning, emphasizing the need for population-specific insights.

OBJECTIVE

This review synthesizes evidence on geographical variations in root canal anatomy, focusing on population-specific characteristics and their clinical relevance.

MATERIALS AND METHODS

Following PRISMA guidelines, databases including PubMed, Scopus, Web of Science, EBSCOhost, Embase, and the Cochrane Register were comprehensively searched. Studies employing advanced imaging modalities such as cone-beam computed tomography, micro-computed tomography, multidetector computed tomography, and nano-computed tomography to analyze root canal morphology were included. Observational studies describing root canal configurations and prevalence in primary molars were reviewed. A meta-analysis was performed to determine pooled prevalence rates and geographical trends for Vertucci canal configurations in maxillary and mandibular molars.

RESULTS

The analysis of 36 studies encompassing 4863 primary molars revealed significant regional variations. Australian maxillary molars exhibited a higher prevalence of fused roots, while Indian and Turkish mandibular molars displayed more accessory canals. Japanese molars were characterized by thinner dentin walls, reflecting population-specific trends in root canal anatomy.

CONCLUSION

Geographical variations in root canal morphology underscore the need for region-specific research and tailored treatment strategies in pediatric endodontics. Advanced imaging modalities play a pivotal role in improving diagnostic accuracy and optimizing clinical outcomes.

Evaluation of primary teeth root canal orifices with naked eye and using magnifying loupes - An in vivo study

Background

Knowledge of the anatomy and morphology of root canal orifices and variations are vital elements affecting treatment outcomes.

Aim

The objective of this study was to evaluate variations in the number of root canal orifices and their patterns in primary teeth, as identified by both the naked eye and under magnifying loupes.

Materials and methods

Total of 173 primary teeth was scheduled for pulpectomy over a period of 18 months. Two examiners assessed the number and pattern of the root canal orifices. After access cavity preparation, the operator recorded the number of root canal orifices with naked eye, and examiner recorded the same using magnifying loupes (3.5×). After cleaning and shaping, the same protocol was used. Collected data were statistically analyzed using SPSS version 23.0 and compared using a paired t-test.

Results

The overall variation in the in the identification of root canal orifices between the naked eye and magnifying loupes (3.005 ± 0.971) was statistically significant after access cavity preparation (P ≤ 0.05).

Conclusion

Magnifying loupes significantly enhances the determination of the number and pattern of root canal orifices in primary teeth. Therefore, the application of magnifying loupes is essential for accurately assessing variations in root canal orifices in primary dentition.

Research on NiTi instruments combined with ultrasonic irrigation and multiantibiotic paste in root canal therapy of periapical inflammation in deciduous teeth

Pain often occurs after root canal treatment due to unavoidable mechanical or chemical damage. The purpose of the present study was to investigate the efficacy of a nickel-titanium (NiTi) device combined with ultrasonic irrigation and multiple antibiotic creams in the treatment of periapical inflammation of deciduous teeth, so as to improve the understanding of root canal treatment and optimize clinical practice. Evaluation of efficacy was conducted using X-rays and the Visual Analog Scale. This treatment significantly reduced pain and also improved patient compliance and treatment outcomes. The findings of the present study may have scientific and clinical significance for optimizing root canal treatment in pediatric dentistry and requires further in-depth research in clinical practice. These outcomes may provide potential new ideas and directions for improving patients' quality of life and the efficacy of clinical treatment and have further impacts on future related research and medical practice.

Application of a new system for classifying root and canal anatomy in studies involving micro-computed tomography and cone beam computed tomography: Explanation and elaboration

Adequate knowledge and accurate characterization of root and canal anatomy is an essential prerequisite for successful root canal treatment and endodontic surgery. Over the years, an ever-increasing body of knowledge related to root and canal anatomy of the human dentition has accumulated. To correct deficiencies in existing systems, a new coding system for classifying root and canal morphology, accessory canals and anomalies has been introduced. In recent years, micro-computed tomography (micro-CT) and cone beam computed tomography (CBCT) have been used extensively to study the details of root and canal anatomy in extracted teeth and within clinical settings. This review aims to discuss the application of the new coding system in studies using micro-CT and CBCT, provide a detailed guide for appropriate characterization of root and canal anatomy and to discuss several controversial issues that may appear as potential limitations for proper characterization of roots and canals.

[Advanced research on root canal therapy for primary teeth]

Primary tooth root canal therapy is a treatment performed on primary teeth diagnosed with pulpitis or periapical periodontitis. This procedure requires perfect instrumentation, disinfection, and filling of root canals to eliminate infection, control inflammation, relieve pain, prevent pathological effects on inherited permanent tooth, and prolong primary tooth preservation. This paper reviews the research history on primary tooth root canal treatment and summarizes the progress on primary tooth root canal treatment, including anatomical morphology, root canal preparation, root canal disinfection, root canal filling, and application of antibiotics.