Unlabelled: Dentin is the fundamental substrate of restorative dentistry and its properties and characteristics are key determinants of nearly all restorative, preventive and disease processes of the teeth. The intrinsic permeability of dentin is responsible for permitting bacterial or chemical substances to diffuse across the dentin and irritate the pulpal and periradicular tissues. Improved understanding of the dentin structure and nature will have important consequences for today's dental procedures. The aims of the study were to observe the direction of dentinal tubules, interglobular dentin, incremental lines of dentin and the dead tracts.
Materials And Methods: A total of 30 teeth (15 primary and 15 permanent molars), unrestored, noncarious, hypoplastic extracted molars were used. Longitudinal ground sections of teeth were obtained using hard tissue microtome.
Results: Examination of ground sections of the primary teeth dentin showed "s"-shaped curvature in four (26.7%) specimens and a straight course of dentinal tubules in 11 (73.3%) specimens out of 15 teeth examined whereas in permanent teeth, all 15 (100%) specimens showed an "s"-shaped curvature. These results are statistically highly significant (P < 0.001).
Conclusion: Dentinal tubules followed an "s"-shaped course in all the 15 (100%) permanent molars and in four (26.7%) primary molars. There was no significant difference in the occurrence of interglobular dentin of primary and permanent molars. But, they were at angles in the primary teeth.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4103/0970-4388.73793 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Postoperative Pain Following Vital Pulp Therapy in Carious Permanent Teeth of Children and Adolescents: A Prospective Cohort Study.
Int J Paediatr Dent
January 2025
Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
Background: Vital pulp therapy (VPT) is one of the treatments recommended for vital deep carious permanent molars. However, postoperative pain remains underexplored in children and adolescents who have undergone VPT.
Aim: This study investigated the incidence, intensity, duration, temporal pattern, and analgesic intake of postoperative pain following VPT in children and adolescents.
Digital analysis of the relationship between maximum bite force and 3-dimensional arrangement of mandibular first molars.
J Clin Exp Dent
December 2024
Doctor, Lecturer. Faculty of Odonto-Stomatology, University of Medicine and Pharmacy at Ho Chi Minh City, 652 Nguyen Trai Street, Ward 11, District 5, 749000, Ho Chi Minh City, Vietnam.
Background: Bite force is one of the important factors that determine the chewing efficiency of molars. This study aimed to investigate the relationship of the maximum bite force (MBF) to the 3-dimensional (3D) arrangement of the first mandibular molars in Angle's class I healthy adults using a digital protocol.
Material And Methods: Subjects were 33 adults (16 males and 17 females) aged 18-25, with Angle's class I occlusions and healthy dentitions.
Efficiency of glass ionomer sealant application in reducing hypersensitivity in MIH-molars in schoolchildren immediately and after 12 weeks.
Eur Arch Paediatr Dent
January 2025
Department of Paediatric Dentistry, University Medicine Greifswald, Walther-Rathenau-Straße 42a, Greifswald, Germany.
Aim: This prospective clinical study aimed to clinically investigate the efficiency of (GIC) glass-ionomer cement application (Ionostar Plus + Easy Glaze, VOCO) in reducing hypersensitivity in permanent molars affected by molar incisor hypomineralisation when assessed immediately (15 min) and 12 weeks after its application.
Materials And Methods: Children with at least one hypersensitive MIH-affected permanent molar (MIH-TNI-3 or 4). The pre-treatment status was evaluated and only included if they did not receive a tooth-specific in-office desensitizing treatment within one month.
Non-surgical correction of an adult Class II high-angle with occlusal plane cant by four compromised permanent first molars extraction, preadjusted lingual appliance and miniscrews: A case report.
Int Orthod
January 2025
Private Practice, Osaka, Japan.
This case report describes a complex full-step asymmetrical Class II division 1 high-angle in an adult patient treated by extraction of compromised first molars with a preadjusted lingual appliance. Since the patient presented severe sagittal and vertical discrepancies combined with an Izard orthofrontal profile with upper lip protrusion, an extraction camouflage was performed with the twofold aim of obtaining ideal occlusal relationship and profile improvement, correcting occlusal plane cant by selective intrusion with interradicular miniscrews. Appropriate biomechanical strategies, including extraction choice and anchorage control during space closure, were needed to achieve the planned results.
View Article and Find Full Text PDFSequence and Chronology of Permanent Teeth Eruption in 5-18-Year-Old School Children of Chennai and the Influence of Sex, BMI, and Socio-Economic Status.
Am J Hum Biol
January 2025
Department of Public Health Dentistry, Tamilnadu Govt Dental College, Chennai, India.
Objectives: This study aimed to determine the sequence and eruption chronology of permanent teeth in school children and adolescents of Chennai and compare the findings with an existing standard table. Additionally, the study also attempted to explore the influence of sex, body mass index (BMI), and socioeconomic status (SES) on tooth eruption patterns.
Methods: A cross-sectional study was designed, and 12,650 children aged 5-18 years were selected from thirty-five schools using a multistage random sampling method.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!