Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study
Introduction: Primary mandibular molars have diverse morphological variations. This trait of human dentition is very important for restoring the anatomy of the tooth as well as for the anthropological study to characterize the ethnicity. Anatomical landmarks like the cusp, groove and ridges vary ev...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nepal Medical Association
2025-03-01
|
| Series: | Journal of Nepal Medical Association |
| Subjects: | |
| Online Access: | http://www.jnma.com.np/jnma/index.php/jnma/article/view/8935 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849735716008886272 |
|---|---|
| author | Megha Pradhan Preeti Singh Anu Ranjan Ujjwal Joshi Prasamsa Chhetri |
| author_facet | Megha Pradhan Preeti Singh Anu Ranjan Ujjwal Joshi Prasamsa Chhetri |
| author_sort | Megha Pradhan |
| collection | DOAJ |
| description |
Introduction: Primary mandibular molars have diverse morphological variations. This trait of human dentition is very important for restoring the anatomy of the tooth as well as for the anthropological study to characterize the ethnicity. Anatomical landmarks like the cusp, groove and ridges vary even among same species.The study was aimed to assess the number of cusps and occlusal grooves in primary mandibular molars of children.
Methods: An observational cross-section study was conducted among pediatric patients in the Outpatient Dental Department of a tertiary care center from October 2023 to March 2024. Fully erupted primary mandibular molars in children aged 3-6 years were included . Intraoral examination of the patient were performed using Gregory WK criteria . A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval.
Results: Among 303 patients, the study showed 118 (38.94%) left and 106 (34.98%) right primary mandibular first molar had four cusps and a 'Y' groove pattern. Among the 303 subjects, male 58 (34.12%) were having a 4Y pattern followed by 46 (27.06%) 4X pattern, while in 48 (36.09%) 4Y pattern followed by 45 (33.83%) 4X pattern was seen.
Conclusions: The result in present study showed Y groove pattern in occlusal surface of primary mandibular molars with four cusps that can be related with conservative pattern of deciduous molar in context of Nepali population.
|
| format | Article |
| id | doaj-art-fda291c962e247ca955e7fbf4e58eb3c |
| institution | DOAJ |
| issn | 0028-2715 1815-672X |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Nepal Medical Association |
| record_format | Article |
| series | Journal of Nepal Medical Association |
| spelling | doaj-art-fda291c962e247ca955e7fbf4e58eb3c2025-08-20T03:07:28ZengNepal Medical AssociationJournal of Nepal Medical Association0028-27151815-672X2025-03-016328410.31729/jnma.8935Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational StudyMegha Pradhan0Preeti Singh 1Anu Ranjan2Ujjwal Joshi3Prasamsa Chhetri4Department of Pedodontics and Preventive Dentistry, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, NepalDepartment of Oral Pathology, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, NepalDepartment of Pedodontics and Preventive Dentistry, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, NepalDepartment of Oral Medicine and Radiology, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, NepalDepartment of Pedodontics and Preventive Dentistry, Kathmandu Medical College and Teaching Hospital, Sinamangal, Kathmandu, Nepal Introduction: Primary mandibular molars have diverse morphological variations. This trait of human dentition is very important for restoring the anatomy of the tooth as well as for the anthropological study to characterize the ethnicity. Anatomical landmarks like the cusp, groove and ridges vary even among same species.The study was aimed to assess the number of cusps and occlusal grooves in primary mandibular molars of children. Methods: An observational cross-section study was conducted among pediatric patients in the Outpatient Dental Department of a tertiary care center from October 2023 to March 2024. Fully erupted primary mandibular molars in children aged 3-6 years were included . Intraoral examination of the patient were performed using Gregory WK criteria . A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results: Among 303 patients, the study showed 118 (38.94%) left and 106 (34.98%) right primary mandibular first molar had four cusps and a 'Y' groove pattern. Among the 303 subjects, male 58 (34.12%) were having a 4Y pattern followed by 46 (27.06%) 4X pattern, while in 48 (36.09%) 4Y pattern followed by 45 (33.83%) 4X pattern was seen. Conclusions: The result in present study showed Y groove pattern in occlusal surface of primary mandibular molars with four cusps that can be related with conservative pattern of deciduous molar in context of Nepali population. http://www.jnma.com.np/jnma/index.php/jnma/article/view/8935cuspgroovemandibularmolarprimary tooth. |
| spellingShingle | Megha Pradhan Preeti Singh Anu Ranjan Ujjwal Joshi Prasamsa Chhetri Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study Journal of Nepal Medical Association cusp groove mandibular molar primary tooth. |
| title | Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study |
| title_full | Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study |
| title_fullStr | Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study |
| title_full_unstemmed | Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study |
| title_short | Assessment of Number of Cusps and Occlusal Groove Pattern in the Primary Mandibular Molars: An Observational Study |
| title_sort | assessment of number of cusps and occlusal groove pattern in the primary mandibular molars an observational study |
| topic | cusp groove mandibular molar primary tooth. |
| url | http://www.jnma.com.np/jnma/index.php/jnma/article/view/8935 |
| work_keys_str_mv | AT meghapradhan assessmentofnumberofcuspsandocclusalgroovepatternintheprimarymandibularmolarsanobservationalstudy AT preetisingh assessmentofnumberofcuspsandocclusalgroovepatternintheprimarymandibularmolarsanobservationalstudy AT anuranjan assessmentofnumberofcuspsandocclusalgroovepatternintheprimarymandibularmolarsanobservationalstudy AT ujjwaljoshi assessmentofnumberofcuspsandocclusalgroovepatternintheprimarymandibularmolarsanobservationalstudy AT prasamsachhetri assessmentofnumberofcuspsandocclusalgroovepatternintheprimarymandibularmolarsanobservationalstudy |