{"doi":"10.1101/2025.06.12.659345","title":"Tracking molar wear in captive baboons: sex and age effects using a modified Scott scoring system","abstract":"<jats:title>Abstract</jats:title>\n                <jats:sec>\n                  <jats:title>Objectives</jats:title>\n                  <jats:p>This study evaluates molar wear progression in a captive baboon population under controlled dietary and environmental conditions. By comparing the dentin exposure ratio (DER) with a newly developed quadrant-based modification of Scott’s dental wear scoring system (Krueger-Scott method), we evaluate how wear patterns vary by age, sex, and occlusal region.</jats:p>\n                </jats:sec>\n                <jats:sec>\n                  <jats:title>Materials and Methods</jats:title>\n                  <jats:p>\n                    Mandibular second molars (M\n                    <jats:sub>2</jats:sub>\n                    ) were assessed at two timepoints, during life and postmortem, in 201 captive baboons from the Southwest National Primate Research Center. Krueger-Scott and DER data were collected from 3D intraoral scans processed in MEDIT Link software. The Krueger-Scott scores assigned ordinal scores (1-10) to four equal quadrants of each M\n                    <jats:sub>2</jats:sub>\n                    based on enamel facet development and dentin exposure. Statistical analyses tested relationships between wear progression, quadrant location, sex, and age.\n                  </jats:p>\n                </jats:sec>\n                <jats:sec>\n                  <jats:title>Results</jats:title>\n                  <jats:p>Krueger-Scott scores and DER values increased significantly between timepoints, indicating wear progression. However, Krueger-Scott scores revealed strong functional patterning: buccal and lingual cusps showed high within-group correlations and weaker cross- group correlations. Males showed significantly higher wear than females, despite being younger on average. The relationship between age and wear progression differed by sex.</jats:p>\n                </jats:sec>\n                <jats:sec>\n                  <jats:title>Discussion</jats:title>\n                  <jats:p>The Krueger-Scott method provided a more anatomically informative and efficient approach to tracking occlusal wear than DER. It captured regional wear variation and functional asymmetries that DER could not detect. Even under controlled conditions, sex-based differences in wear emerged, likely reflecting behavioral, morphological, or enamel structural variation. These findings offer a comparative baseline and demonstrate the utility of quadrant- level scoring for interpreting wear in extant and extinct taxa.</jats:p>\n                </jats:sec>","journal":null,"year":null,"id":663969,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":0,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1417904,"name":"Ian Towle","orcid":"0000-0002-0939-7222","position":1,"is_corresponding":false},{"id":786950,"name":"Gregory J. Matthews","orcid":"0000-0002-8413-5097","position":2,"is_corresponding":false},{"id":1418421,"name":"Ana Álvarez Fernández","orcid":null,"position":3,"is_corresponding":false},{"id":934105,"name":"Leslea J. Hlusko","orcid":"0000-0003-0189-6390","position":4,"is_corresponding":false},{"id":1417903,"name":"Kristin L. Krueger","orcid":"0000-0002-8132-7675","position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Tracking molar wear in captive baboons: sex and age effects using a modified Scott scoring system","abstract":"<jats:title>Abstract</jats:title>\n                <jats:sec>\n                  <jats:title>Objectives</jats:title>\n                  <jats:p>This study evaluates molar wear progression in a captive baboon population under controlled dietary and environmental conditions. By comparing the dentin exposure ratio (DER) with a newly developed quadrant-based modification of Scott’s dental wear scoring system (Krueger-Scott method), we evaluate how wear patterns vary by age, sex, and occlusal region.</jats:p>\n                </jats:sec>\n                <jats:sec>\n                  <jats:title>Materials and Methods</jats:title>\n                  <jats:p>\n                    Mandibular second molars (M\n                    <jats:sub>2</jats:sub>\n                    ) were assessed at two timepoints, during life and postmortem, in 201 captive baboons from the Southwest National Primate Research Center. Krueger-Scott and DER data were collected from 3D intraoral scans processed in MEDIT Link software. The Krueger-Scott scores assigned ordinal scores (1-10) to four equal quadrants of each M\n                    <jats:sub>2</jats:sub>\n                    based on enamel facet development and dentin exposure. Statistical analyses tested relationships between wear progression, quadrant location, sex, and age.\n                  </jats:p>\n                </jats:sec>\n                <jats:sec>\n                  <jats:title>Results</jats:title>\n                  <jats:p>Krueger-Scott scores and DER values increased significantly between timepoints, indicating wear progression. However, Krueger-Scott scores revealed strong functional patterning: buccal and lingual cusps showed high within-group correlations and weaker cross- group correlations. Males showed significantly higher wear than females, despite being younger on average. The relationship between age and wear progression differed by sex.</jats:p>\n                </jats:sec>\n                <jats:sec>\n                  <jats:title>Discussion</jats:title>\n                  <jats:p>The Krueger-Scott method provided a more anatomically informative and efficient approach to tracking occlusal wear than DER. It captured regional wear variation and functional asymmetries that DER could not detect. Even under controlled conditions, sex-based differences in wear emerged, likely reflecting behavioral, morphological, or enamel structural variation. These findings offer a comparative baseline and demonstrate the utility of quadrant- level scoring for interpreting wear in extant and extinct taxa.</jats:p>\n                </jats:sec>","is_dataset_classified":null,"base_score":0.0,"endowment":0.0,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"19162232","pmcid":null,"openalex_id":"https://openalex.org/W4411324813","authors":[],"funders":[{"funder_name":"National Science Foundation","grant_id":"0500179","title":"Investigating Genetic Mechanisms of the Baboon Dentition"},{"funder_name":"National Science Foundation","grant_id":"0616308","title":"The Evolution of Modularity in the Dentition of Old World Monkeys"},{"funder_name":"National Science Foundation","grant_id":"0130277","title":"Investigating Genetic Mechanisms of the Baboon Dentition"},{"funder_name":"European Commission","grant_id":"101054659","title":"Expanding our understanding of  human evolution through pleiotropy"},{"funder_name":"","grant_id":"NSF-INSPIRE microgrant program","title":null},{"funder_name":"","grant_id":"P51 OD011133","title":null},{"funder_name":"National Institutes of Health","grant_id":"3P51OD011133-22S2","title":"Nonhuman Primate model of age-related cognitive decline and dementias"}],"total_grants":7,"fwci":null,"citation_percentile":null,"influential_citations":0,"citation_trend":[],"oa_status":"closed","license":"https://www.biorxiv.org/about/FAQ#license","oa_locations":[{"url":"https://syndication.highwire.org/content/doi/10.1101/2025.06.12.659345","host_type":"publisher"},{"url":"https://doi.org/10.1101/2025.06.12.659345","host_type":"repository"},{"url":"https://doi.org/10.1002/ajpa.70126","host_type":""},{"url":"https://pubmed.ncbi.nlm.nih.gov/40970332","host_type":""},{"url":"https://pubmed.ncbi.nlm.nih.gov/40970332/","host_type":""},{"url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC12447378/","host_type":""}],"fields_of_study":["Animal Behavior and Welfare Studies","Meat and Animal Product Quality"],"mesh_terms":[],"keywords":["Tracking (education)","Molar","Demography","Psychology","Medicine","Orthodontics","Sociology","Male","Sex Factors","Age Factors","Animals","Female","Tooth Wear","Research Article","Papio"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-13T00:25:18.525640Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}