Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study
Aim: To assess the relations between the divergence angle of the maxillary molar roots and their proximity to the maxillary sinus floor using CBCT. Method: This study comprised CBCT scans of the maxilla, including at least the inferior one-third of the maxillary sinus and at least one molar present...
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| Format: | Article |
| Language: | English |
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Springer
2021-12-01
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| Series: | Saudi Dental Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905221000857 |
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| author | Ali Robaian Nasser Raqe Alqhtani Ziyad Ibrahim Alghomlas Adel Alzahrani Abdulrahman Khalid Almalki Ali Al Rafedah Abdullatif Al Abdulsalam Khaled M. Alzahrani |
| author_facet | Ali Robaian Nasser Raqe Alqhtani Ziyad Ibrahim Alghomlas Adel Alzahrani Abdulrahman Khalid Almalki Ali Al Rafedah Abdullatif Al Abdulsalam Khaled M. Alzahrani |
| author_sort | Ali Robaian |
| collection | DOAJ |
| description | Aim: To assess the relations between the divergence angle of the maxillary molar roots and their proximity to the maxillary sinus floor using CBCT. Method: This study comprised CBCT scans of the maxilla, including at least the inferior one-third of the maxillary sinus and at least one molar present in any quadrant with complete eruption and root formation. Evaluation included the vertical relations between the maxillary molar root apices and the maxillary sinus floor (MSF), and the root divergence was measured from the root apices to the floor of the pulp chamber. The chi-square test was used for the associations between the study parameters. For the correlation between root divergence angles and MSF vertical relationship types, the Spearman test was used. A P-value < 0.05 was considered significant. Results: A total of 100 scans were analyzed, including 316 permanent maxillary first and second molars. The MSF Type II vertical relationship was the most prevalent (39.6%), followed by Type I (31.3%). The highest divergence angle was found between the distobuccal and palatal roots (mean = 44.9 ± 10.5°). For the mesiobuccal-distobuccal angle groups, there were higher percentages of the MSF Type I and II relationships among the angle groups < 1° and 21-45°. For the mesiobuccal-palatal angle groups, a higher prevalence of the MSF Type II relationship was found in the <21⁰ and >45⁰ angle groups, and a higher prevalence of the Type I relationship was found in the 21-45⁰ angle group. For the distobuccal-palatal angle groups, higher percentages of the MSF Type II relationship were found in the three angle groups. For all teeth, there was a significant positive correlation between the MSF vertical relationship and the mesiobuccal-palatal angle (r = 0.116; P = 0.039). Conclusion: There was a positive correlation between the divergence angle of the roots and their vertical relationship with the MSF. Clinicians should assess the divergence between the roots before performing extraction or endodontic treatments. |
| format | Article |
| id | doaj-art-0e42700aeba74ccf87185a31671681de |
| institution | Kabale University |
| issn | 1013-9052 |
| language | English |
| publishDate | 2021-12-01 |
| publisher | Springer |
| record_format | Article |
| series | Saudi Dental Journal |
| spelling | doaj-art-0e42700aeba74ccf87185a31671681de2025-08-20T03:54:24ZengSpringerSaudi Dental Journal1013-90522021-12-0133895896410.1016/j.sdentj.2021.08.004Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) studyAli Robaian0Nasser Raqe Alqhtani1Ziyad Ibrahim Alghomlas2Adel Alzahrani3Abdulrahman Khalid Almalki4Ali Al Rafedah5Abdullatif Al Abdulsalam6Khaled M. Alzahrani7Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi Arabia; Corresponding author at: Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia.Department of Oral and Maxillofacial Surgery and Diagnostic Science, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi ArabiaGeneral Dental Practitioner, Riyadh, Saudi ArabiaDepartment of Oral Medicine and Diagnostic Sciences, College of Dentistry, King Saud University, Riyadh, Saudi ArabiaGeneral Dental Practitioner, Riyadh, Saudi ArabiaDepartment of Oral and Maxillofacial Surgery and Diagnostic Science, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi ArabiaGeneral Dental Practitioner, Ministry of Health, Riyadh, Saudi ArabiaDepartment of Prosthetic Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, Al Kharj, Saudi ArabiaAim: To assess the relations between the divergence angle of the maxillary molar roots and their proximity to the maxillary sinus floor using CBCT. Method: This study comprised CBCT scans of the maxilla, including at least the inferior one-third of the maxillary sinus and at least one molar present in any quadrant with complete eruption and root formation. Evaluation included the vertical relations between the maxillary molar root apices and the maxillary sinus floor (MSF), and the root divergence was measured from the root apices to the floor of the pulp chamber. The chi-square test was used for the associations between the study parameters. For the correlation between root divergence angles and MSF vertical relationship types, the Spearman test was used. A P-value < 0.05 was considered significant. Results: A total of 100 scans were analyzed, including 316 permanent maxillary first and second molars. The MSF Type II vertical relationship was the most prevalent (39.6%), followed by Type I (31.3%). The highest divergence angle was found between the distobuccal and palatal roots (mean = 44.9 ± 10.5°). For the mesiobuccal-distobuccal angle groups, there were higher percentages of the MSF Type I and II relationships among the angle groups < 1° and 21-45°. For the mesiobuccal-palatal angle groups, a higher prevalence of the MSF Type II relationship was found in the <21⁰ and >45⁰ angle groups, and a higher prevalence of the Type I relationship was found in the 21-45⁰ angle group. For the distobuccal-palatal angle groups, higher percentages of the MSF Type II relationship were found in the three angle groups. For all teeth, there was a significant positive correlation between the MSF vertical relationship and the mesiobuccal-palatal angle (r = 0.116; P = 0.039). Conclusion: There was a positive correlation between the divergence angle of the roots and their vertical relationship with the MSF. Clinicians should assess the divergence between the roots before performing extraction or endodontic treatments.http://www.sciencedirect.com/science/article/pii/S1013905221000857Maxillary sinusDivergence angleRoot lengthMaxillary molarsCBCT |
| spellingShingle | Ali Robaian Nasser Raqe Alqhtani Ziyad Ibrahim Alghomlas Adel Alzahrani Abdulrahman Khalid Almalki Ali Al Rafedah Abdullatif Al Abdulsalam Khaled M. Alzahrani Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study Saudi Dental Journal Maxillary sinus Divergence angle Root length Maxillary molars CBCT |
| title | Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study |
| title_full | Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study |
| title_fullStr | Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study |
| title_full_unstemmed | Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study |
| title_short | Vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor: A cone-beam computed tomography (CBCT) study |
| title_sort | vertical relationships between the divergence angle of maxillary molar roots and the maxillary sinus floor a cone beam computed tomography cbct study |
| topic | Maxillary sinus Divergence angle Root length Maxillary molars CBCT |
| url | http://www.sciencedirect.com/science/article/pii/S1013905221000857 |
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