Deviant morphology of the root canal system in mandibular premolars: clinical cases

Georgiev, Kostadin; Pecheva, Aleksandra

doi:10.3897/folmed.64.e58877

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…Lower premolars have gained considerable attention from the clinical world due to wide-spectrum occurrences of morphological aberrations in root and canal systems [11]. Not much literature is available regarding the lower second premolar compared with first premolars.…”

Section: Discussionmentioning

confidence: 99%

Two Rooted Mandibular Second Premolar: An Unusual Finding

Sibal¹,

Patel²,

Singi³

et al. 2022

Cureus

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Understanding the root and canal anatomy is pivotal before initiating endodontic surgical procedures. Any missed canal will cause treatment failure and ultimately lead to tooth extraction in this era of tooth conservation. Mandibular second premolars have attracted researchers and clinicians for having aberrant anatomy. Variations in the number of roots or canals may not be discerned on 2D radiographs and may become apparent during treatment procedures. The occurrence of two roots in the lower second premolar has been reported in the current case. Here, in this case, the authors have described the clinical course of the patient along with the management of these two rooted mandibular second premolars.

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Section: Discussionmentioning

confidence: 99%

Two Rooted Mandibular Second Premolar: An Unusual Finding

Sibal¹,

Patel²,

Singi³

et al. 2022

Cureus

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Influence of Endodontic Cavity Design on Interfacial Voids, Class II Resin Composites Sealing Ability and Tooth Fracture Resistance: An In Vitro Study

Assalman,

Al Onaizan,

Elgezawi

et al. 2024

JCM

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Objective: The aim of this in vitro investigation is to study the effect of endodontic cavity design on interfacial voids, class II resin composite sealing ability, and fracture resistance in mandibular premolars. Methods: A total of 48 single-rooted mandibular premolars received compound class II preparations with either traditional flare access cavities (group A) or contracted endodontic cavity preparations (group B). Each study group was subdivided according to the coronal restoration into two sub-groups as α and β. In the α group, a microhybrid composite was used after etch-and-rinse bonding technique using an MDP-containing universal adhesive. In the β group, a self-adhesive composite was used as coronal restoration after endodontic treatment (n = 12) for each subgroup. A micro-CT analysis was performed to assess the obturation interfacial voids and tracing of class II cervical interfacial adaptation. The tooth fracture resistance testing was then performed adding an extra group of 12 sound non-prepared teeth, which were tested as the control for fracture strength testing. A one-way ANOVA and post-hoc testing were used together with descriptive statistics for an analysis of the mean values of obturation interfacial voids. A two-way ANOVA was used to assess the fracture resistance test results, and to find the influence of endodontic access design and the type of composite material on the fracture resistance testing. Chi-square testing was employed to analyze the cervical interfacial seal of the class II restorations. Results: A one-way ANOVA revealed that there were no statistically significant differences between test groups in the amount of obturation interfacial voids (p > 0.05). There were no statistically significant differences between test groups in terms of cervical interfacial sealing ability (p > 0.05). A two-way ANOVA revealed that no statistically significant differences between test groups including the control group existed in terms of the fracture resistance testing (p > 0.05). Conclusions: Although it does not improve tooth fracture resistance, the contracted endodontic access cavity does not deteriorate the quality of obturation in terms of the interfacial porosity. The self-adhesive composite does not improve the efficiency of cervical interfacial adaptation or tooth fracture resistance regardless of the endodontic access cavity shape, yet it revealed a substantial load-bearing capacity.

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Conventional root canal treatment of a mandibular second premolar with three roots and three canals performed by an undergraduate student: A case report with 8-year follow-up

Awooda,

Mityas Elyas,

Al-Nazhan

2023

Saudi Journal of Oral Sciences

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In developing countries, such as Sudan, there is a lack of advanced endodontic technologies and specialized endodontists. Therefore, challenging endodontic cases are inevitability encountered by undergraduate students and general dental practitioners. Their ability to manage such cases can significantly impact the decision of whether a tooth is saved or extracted. Here, we report the case of a 24-year-old male patient who presented to our clinic with pain in the mandibular second premolar. Tooth #45 had caries and was tender to vertical percussion. An intraoral periapical radiograph (IOPR) revealed a wide periodontal ligament space and thickened lamina dura, with the deep occluso-distal decay reaching the pulp space. A radiograph obtained using the tube shift technique revealed the presence of three distinct roots and canals. The patient was diagnosed with symptomatic irreversible pulpitis and apical periodontitis. His root canal treatment (RCT) was performed by a 5th-year undergraduate student using the conventional radiography technique, hand file instruments, and lateral condensation obturation. At the 8-year follow-up visit, the tooth crown was lost, the patient was asymptomatic, and the IOPR revealed normal periapical bone. This case demonstrates the importance of training undergraduate students from developing countries to perform RCT for challenging endodontic cases using conventional techniques.

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Deviant morphology of the root canal system in mandibular premolars: clinical cases

Cited by 4 publications

References 8 publications

Two Rooted Mandibular Second Premolar: An Unusual Finding

Two Rooted Mandibular Second Premolar: An Unusual Finding

Influence of Endodontic Cavity Design on Interfacial Voids, Class II Resin Composites Sealing Ability and Tooth Fracture Resistance: An In Vitro Study

Conventional root canal treatment of a mandibular second premolar with three roots and three canals performed by an undergraduate student: A case report with 8-year follow-up

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