Publications by authors named "Mohammed A Alobaid"

Background: This simulated study of 30 severely curved L-shaped root canals aimed to compare preparation time, aberrations, width measurements, and fractured files of three nickel-titanium (Ni-Ti) files, namely, ProTaper, ProTaper Next (PTN), and WaveOne (WO).

Methods: Thirty simulated L-curved root canals of resin blocks were randomly divided into three groups. The canals were prepared to a tip size of 25 using ProTaper, PTN, and WO rotary file systems.

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Intestinal intussusception is a condition determined as the telescoping of one portion of the bowel loops into the approximate distal portion. Intestinal intussusception is a fairly rare condition in the adult population and almost always secondary to the underlying pathology; the most common leading causes of intussusception in adults are neoplasms, accounting for up to two-thirds of the causes. However, appendicular pathology is an extremely rare leading cause.

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Reasons for the failed endodontic teeth which had an extensive restoration can be attributed to the multiple materials that were used in it. Various post-core materials that are commonly used are compared for fracture resistance in the current study. Fourty maxillary incisors that needed root canal therapy were allocated into four groups of 10 each.

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Introduction: An instrumented and endodontically treated tooth may sometimes impede disinfection by trapping hard tissue as well as the other canal contents at the isthmus level of the canal. Thus, the current study was piloted to assess the competence of two irrigating systems.

Methods: Twenty mandibular with two mesial canals convergent into a single foramen and joined by an isthmus of the human permanent teeth were compared for the two irrigation systems of continuous and intermittent ultrasonic (US) motions of the irrigation.

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BACKGROUND An understanding of root canal morphology is vital for successful endodontic treatment. However, variations in the root canal system of permanent canines, especially in relation to population-based diversity, are not well-documented. This study thus aimed to analyze the root canal numbers, configurations, and bilateral symmetry in 1080 permanent canine teeth among 270 Saudi individuals using cone-beam computed tomography (CBCT), contributing to the existing body of knowledge and aiding clinicians in devising effective treatment strategies.

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Background: Cone-beam computed tomography (CBCT) could be more beneficial in clinical situations that involve the determination of root canal morphology.

Aim: The aim of the study was to ascertain the prevalence of radix molaris (paramolaris-RP and entomolaris-RE) in a subpopulation of Saudi Arabia using CBCT.

Method: A total of 700 CBCT scans of mandibular permanent first molars were included in this study.

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Background: The purpose of the research was to evaluate the content and delivery of the undergraduate endodontic curriculum.

Methods: A needs assessment survey was distributed among the Deans of all the dental colleges in Saudi Arabia.

Results: The response rate was 72%.

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Lack of basic knowledge about the external and internal anatomies of the root canal system and common variations in teeth may lead to various procedural errors or treatment failure. In this study, the root canal configurations of mandibular incisors and the symmetry of the contralateral incisors of Saudi Arabian subpopulations were analyzed and determined using cone beam computed tomography (CBCT). A retrospective evaluation of 700 patients was conducted, and 1260 fully developed permanent mandibular central incisors were assessed.

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Microleakage is a persistent problem despite advancement in materials and techniques in fixed prosthodontics. This leads to the importance of sound crown foundation material and luting agents used to maintain the marginal seal. The literature is deficient with studies, comparing microleakage under various crown foundation materials and luting agents, especially with CAD-CAM (computer-aided design and computer-aided manufacturing) metal crowns.

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Aim: To assess the views of the dental interns (DIs) and general dental practitioners (GDPs) in the Asir region of Saudi Arabia on antibiotic prescription for endodontic therapy.

Methods: The link to a cross-sectional online survey with 16 quantitative and qualitative questions was e-mailed to 60 DIs at the College of Dentistry of King Khalid University (group 1 [G1]) and 60 GDPs at the governmental primary healthcare centers in the Asir region of Saudi Arabia (group 2 [G2]). The data obtained from the survey were then subjected to a comparative statistical analysis.

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