Diet and Oral Health of Populations that Inhabited Central Argentina (Córdoba Province) during Late Holocene

The aim of this work is to study, from a bioarchaeological perspective, the diet and oral health of the populations that inhabited Central Argentina in two periods which would reflect changes in subsistence strategies: earlier late Holocene (ca. 2500–1500 years BP) and later late Holocene (ca.1500–400 years BP). The sample is composed by 83 adult individuals from 47 archaeological sites. We considered five non‐specific indicators of stress, infectious and degenerative diseases: hypoplasia of dental enamel, dental caries, abscesses, antemortem teeth loss, and calculus. We also considered hypercementosis, dens in dens, and agenesis. We test intraobserver error by means of intraclass correlation coefficient and analysis of variance of repeated measures. We calculated prevalence by sex, age, geographic subregion, and chronological period. We applied Chi‐square (X²) to test statistical significance of observed differences. Considering the sample as a whole, low prevalence of dental caries (10.27%), abscesses (16.52%), and hypoplasia (10.84%) are coincident with values observed for populations with mixed or hunter‐gathering subsistence strategy. In later late Holocene, high incidence of caries should be considered as indicator of consumption of C4 vegetables or other carbohydrate‐rich vegetables, such as legumes of Prosopis sp. Also, moderate values of dental enamel hypoplasia should be related with metabolic‐systemic stress episodes. Summarizing, these results are coincident with isotopic, archaeological, and ethnohistorical evidences which suggest climatic, social, and demographic pressures that might have affected the lifestyle of these populations before the Spanish conquest. Copyright © 2012 John Wiley & Sons, Ltd.     

Dental pathology and diet at Apollonia,a Greek colony on the Black Sea

Dental pathology has the potential to provide insight into the composition of the diet and to reveal dietary differences based on age, sex and social status. Human skeletal remains from the Greek colonial site of Apollonia (5^th to 2^nd centuries BC) on the Black Sea coast of Bulgaria were analysed for various forms of dental pathology in order to: assess the prevalence of dental disease in the population; compare the dental pathology data from Apollonia with dietary data derived from ancient literary texts and from previous stable isotopic analysis of the colonists' remains; explore variations in dental disease with respect to age and sex; and compare the prevalence of dental pathology in the Apollonians with that of other Greek populations. The composition of the diet, as indicated by the dental pathology data, is consistent with the stable isotopic evidence from Apollonia and with the ancient literary texts, both of which indicate the consumption of a relatively soft, high carbohydrate diet. The higher frequency of dental caries, abscesses, calculus, and antemortem tooth loss in older adults compared with younger ones reflects the age‐progressive nature of these conditions. The lack of significant sex differences in caries, abscesses, calculus and tooth loss corresponds with the stable carbon and nitrogen isotopic data derived from bone collagen, which indicate no significant sex differences in the consumption of dietary protein. In contrast, these findings conflict with the ancient literary texts, which refer to distinct dietary differences between males and females, and with the stable carbon isotopic values derived from bone carbonate, which indicate sex differences with respect to the overall diet. Despite the lack of marked sex differences in dental pathology, overall trends point to subtle dietary differences between males and females. A greater degree of tooth wear in males also hints at possible sex differences in the use of the teeth as tools. Copyright © 2007 John Wiley & Sons, Ltd.     

Dental health at the transition from the Late Antique to the early Medieval period on Croatia's eastern Adriatic coast

Dento‐alveolar pathologies: caries, ante mortem tooth loss, abscesses, calculus, alveolar resorption and tooth wear were analysed in two composite skeletal series from Croatia's eastern Adriatic coast (Dalmatia). The first consists of 103 skeletons from seven Late Antique (3rd–6th century AD) sites, the second of 151 skeletons from three Early Medieval (7th–11th centuries AD) sites. As recent bioarhaeological studies (Šlaus, 2008 ) showed a significant increase of disease loads and trauma frequencies in Dalmatia during the Early Medieval period, the aim of this study was to investigate whether dental health was equally adversely affected by the Late Antique/Early Medieval transition. The results of our analyses show that the frequencies of carious lesions, ante mortem tooth loss, abscesses and alveolar resorption increased significantly during the Early Medieval period, as did the degree of heavy occlusal wear on posterior teeth. These data suggest a change in alimentary habits, with a significantly higher dependence on carbohydrates and a greater reliance on hard, fibrous foods requiring vigorous mastication in the Early Medieval diet. The combination of higher calculus and lower caries rates in the Late Antique series similarly suggests more protein in the Late Antique diet and is, therefore, also consistent with the hypothesised change in alimentary habits. In general (the two exceptions are male caries and female alveolar resorption frequencies) lesion frequencies increased uniformly in both sexes suggesting that the deterioration of dental health during the Early Medieval period equally affected males and females. Cumulatively, the collected data suggest that the political, social, economic and religious changes that characterised the Late Antique/Early Medieval transition in Dalmatia resulted in a clear discontinuity, not only from the cultural, but also from the biological point of view with an evident deterioration of oral health during the Early Medieval period. Copyright © 2010 John Wiley & Sons, Ltd.     

A dental study comparing age estimations of the human remains from the Swedish warship Vasa

The great Swedish warship Vasa capsized and sank in Stockholm harbour on her maiden voyage in 1628. The ship was raised from the seabed in 1961 and skeletal remains were recovered from at least 25 individuals, with teeth and jaws from 17 of them. The skeletal material was odontologically examined, including dental radiographs. Teeth lost both ante‐mortem and post‐mortem were recorded and variations in tooth anatomy noted. Acquired changes were recorded including enamel hypoplasia, attrition, dental caries and periodontal recession. Age estimations based on a separate odontological study, osteological changes and tooth attrition had been made in 1989. Ages were estimated additionally by three non‐destructive dental methods based on (a) the length of the apical translucent zone, (b) selected measurements both on intact teeth and from ratios on dental radiographs and (c) ratios of the length and width measurements on dental radiographs from selected teeth. Several sources of post‐mortem changes had been observed, among them vivianite in 33 teeth from four individuals. The results of the dental examination showed that few teeth had been lost ante‐mortem, there was a low caries rate and little loss of periodontal attachments. With few exceptions, there is fairly good agreement between the different methods of estimating age. Age estimates based on dental attrition were, however, significantly different from the other dental methods and age estimates calculated from apical translucency ought to be regarded with scepticism due to post‐mortem changes. The chronological ages of the victims will never be known, but age estimates based on all the age‐markers available will probably reach a fairly close approximation. Copyright © 1999 John Wiley & Sons, Ltd.     

Using General Estimating Equations to Analyze Oral Health in the Moche Valley of Perú

This study introduces a new method for analyzing oral health indicators and thus reconstructing diet. To this end, we examined the dental remains of 173 individuals recovered from the site of Cerro Oreja in the Moche Valley of Perú, who lived during the Salinar (400–1 BC) or Gallinazo (AD 1–200) phases. The infectious and degenerative conditions analyzed include: dental caries, dental wear, dental abscess, antemortem tooth loss and dental calculus, all of which have been used to track dietary and thus subsistence‐related economic and sociopolitical changes. Data were analyzed using generalized estimating equations, an extension of generalized linear models. Significant changes in the frequency of occurrence of most dental conditions suggest that during the period of study, there was an increase in the consumption of agricultural products. However, these changes in oral health did not equally affect females and males. By the end of the Gallinazo phase, significant sex differences developed, with females more often affected by dental caries and males displaying greater mean molar wear scores. Copyright © 2011 John Wiley & Sons, Ltd.     

Dental Health of Free Blacks in New York State during the Mid‐19th Century

The current research will examine the frequency of carious teeth, periapical abscesses and ante‐mortem tooth loss in the Newburgh Colored Burial Ground (1830–1870), a free black cemetery in Newburgh, New York. The Newburgh material is compared with skeletal samples from the New York African Burial Ground, New York State almshouses, a free black cemetery from Philadelphia and middle‐class/upper‐class European cemeteries. Although previous research suggests that dental health became worse throughout the 19th century, there is no consistent pattern between the 17th‐century and 18th‐century skeletal sample of enslaved blacks from New York City and 19th‐century free blacks from Newburgh and Philadelphia. The frequency of dental caries does increase through time but the other indicators change little (equal or fewer ante‐mortem tooth loss) or suggest an improvement in dental health (fewer periapical abscesses) through time. Relative to contemporaneous populations, the individuals from Newburgh appear much more similar in terms of dental health to upper‐class and middle‐class European groups than to the other marginalised groups considered in this research. The impact of the economic, political and social changes that accompanied the Industrial Revolution and their potential impact on dental health are considered. Copyright © 2011 John Wiley & Sons, Ltd.     

Dental evolution in prehistoric Native Americans of the Ohio valley area. I. Wear and pathology

Temporal patterns of tooth wear rates (loss of crown height) and dental pathologies (caries, abscess, and tooth loss) are estimated for 40 Native American populations of the upper Ohio River valley area ranging in time from the Late Archaic (ca. 3500 years BP ) to Protohistoric times (ca. 350 years BP ). Within this time span three ‘dental cultural ecological environments’ are recognized: high rates of wear, low frequencies of pathology (Late Archaic), low rates of wear, low frequencies of pathologies (Woodland, ca. 2500–1000 years BP ), and low rates of wear and high frequencies of pathologies (Late Prehistoric, ca. post-1000 years BP ). Phenotypic selection acting to maintain tooth size is associated with pre-ceramic, hunter–fisher–gatherers in the first dental environment. The introduction and development of ceramics at the end of the Late Archaic is associated with significant reduction in tooth wear rates and reduction in size of maxillary teeth, most likely due to selection. From at least the Middle Woodland period (ca. 2000 years BP ) to the end of the time sequence considered, tooth size in Ohio Valley Native Americans was stable, with minor fluctuations due to genetic drift. At present there is no evidence that major changes in diet at the beginning of the Late Prehistoric period affected tooth size, even though the frequencies of dental pathologies increased dramatically. © 1997 John Wiley & Sons, Ltd.     

Tooth wear in two ancient populations of the Khazar Kaganat region in the Ukraine

Tooth wear is a common phenomenon in archaeological material. It has been related to the abrasiveness of diet and to the tribological attrition of teeth of individuals. Numerous investigations have been carried out in north and middle American samples as well as African anthropological material. Not much is known about tooth wear in European cultures. Eleven skulls from Chervona Gusarovka, and 14 skulls from the Upper Saltov sites of the Khazar Kaganat region (8th–10th centuries AD) in eastern Ukraine, with different diets were examined. A total of 208 teeth were studied for tooth wear, caries prevalence and periodontal status. Abrasion grades were determined according to a standardised classification and statistically evaluated. Periodontal status was measured using the distance between the enamel‐cementum junction and alveolar crest and the gingival attachment level respectively. Tooth wear was significantly different (P < 0.01) between the two populations. A low caries prevalence of 4.2% in the Chervona Gusarovka population and 1.7% in the Upper Saltov population was found. Significantly more alveolar crest bone resorption on the lingual side was found in the premolars and anterior teeth of the Chervona Gusarovka population. No significant differences were found regarding gingival attachment levels and gingival recession. It is concluded that the content and mode of food preparation influenced tooth wear, as reflected by the prevalence of dental caries and periodontal diseases in these ancient populations. Copyright © 2006 John Wiley & Sons, Ltd.     

Distribution of dental caries in an early 17th century swedish population with special reference to diet

The distribution of dental caries was determined in complete and partial human dentitions from a 17th century (1621–1640) city graveyard excavated in Gothenburg, Sweden. Sixty‐three adults and two children, divided into five different age groups, were studied. Altogether 949 teeth (943 permanent and six deciduous) were examined macroscopically using a dental probe and X‐rays. A high number of teeth had been lost post‐mortem. An increase in ante‐mortem tooth loss was found with increasing age. Sixty per cent of all individuals and 12% of all teeth showed signs of caries. The number of carious teeth per subject increased with increasing age. The highest prevalence of individuals with caries was found for the age group 26–35 (69%). Caries were most prevalent in the first, second and third lower molars (60%), while the incisors and canines in the upper and lower jaws were the least affected teeth (1%). The occlusal surface was the area most susceptible to caries (45%), followed by the buccal cemento–enamel junction (16%) and the approximal contact point (11%). This study shows that, although consuming a diet believed to have been lower in sugar content compared to modern populations, caries did affect a rather high number of individuals living in Sweden during the early 17th century. Copyright © 1999 John Wiley & Sons, Ltd.     

Diet,nutritional status and oral health in hunter‐gatherers from the central‐northern coast of Patagonia and the Chubut river lower valley,Argentina

Archaeological research in central‐northern Patagonia (Atlantic coast and lower the valley of Chubut river) showed that this area was used since at least the Middle Holocene. Stable isotope analyses (¹³C and ¹⁵N) of human bone samples indicate that hunter‐gatherers living in that area had a terrestrial‐marine diet including guanaco meat, land plants, mollusks and pinnipeds. Despite this general trend, intersite variability and changes through time were noted, especially after the late Holocene. These results have been reinforced by archaeofaunal, technological and bioarchaeological records. In this paper, three hypotheses are examined: (a) the diet of these populations was complete and rich enough to ensure good health status and avoid nutritional deficiencies; (b) carbohydrate consumption increased progressively after 1000 BP, when pottery technology was adopted and (c) this kind of mixed diet would have been qualitatively more nutritious than that of other populations of the region, which would have resulted in better nutritional and healthy conditions. These three hypotheses are compared with dental results obtained from 563 permanent teeth from 45 individuals (34 adults and 11 juveniles from both sexes), rescued from burial sites. Indicators of oral health were assessed through the observation of caries, abscesses, wear, pulpar cavity exposure and ante mortem loss. Features of nutritional status such as enamel hypoplasia, porotic hyperostosis and cribra orbitalia were also examined. Given the availability of direct radiocarbon dating for most of the sample, three temporal series were determined: ‘Before 1000 BP’, ‘1000–5000 BP’ and ‘Post‐contact’. No evidence of alimentary stress or iron deficiency was found in individuals from the three series, which accounts for healthy and good nutritional life conditions. After 1000 BP, the results show a progressive increase in the caries percentage and a decrease in abscesses, dental wear and ante mortem losses frequency. This is possibly related to more consumption of processed foods in the last 1000 years. These results were compared with similar studies based on samples from different environments and latitudes of Patagonia. Evidence suggests that mixed diets (marine‐terrestrial) would have been more appropriate and nutritionally complete than exclusively marine or terrestrial diets. Copyright © 2010 John Wiley & Sons, Ltd.     

Pretos Novos: Evidence for African Oral Hygiene Practices in Brazil, 1769–1830

Fine, polished abrasion of teeth provides evidence for use of traditional oral hygiene practices in 32 fragmentary dentitions from a cemetery for newly arrived enslaved Africans who died before leaving Valongo, the slave port and market of Rio de Janeiro. We infer that chewing sticks were used before these people were enslaved. Cosmetic dental modification and abrasion of tooth roots occur in some individuals. High caries frequency, tooth loss and hypercementosis characteristic remains of enslaved Africans with longer residence in the New World were not found in this unique collection. We review evidence that the practice of using chewing sticks persists in some regions of the Americas. Copyright © 2012 John Wiley & Sons, Ltd.     

Dental disease in the Nile Valley during the New Kingdom

This study examines evidence for dental disease (caries, abscesses, antemortem tooth loss and severity of dental wear) in Nubian and Egyptian groups living in the Nile Valley during the New Kingdom. Specific attention is given to individuals buried at the site of Tombos, a cemetery in Nubia used during the Egyptian colonial occupation. In addition, three Nubian and two Egyptian samples are included for comparative purposes. While some similarities in condition frequencies between Tombos and the comparative groups are apparent, especially in the rates of caries and abscesses, significant differences in antemortem tooth loss and severity of tooth wear point to variation in these Nile Valley samples. These differences are especially evident for males. Higher rates of these conditions at Tombos may be attributed to the socio‐political and cultural changes taking place during this time of colonial occupation. Changes in foodways and occupational environments may have resulted in stress, as demonstrated by these dental conditions experienced by the Tombos people throughout this transitional period. Copyright © 2009 John Wiley & Sons, Ltd.     

Exceptional rates of dental caries in a scandinavian Early Iron Age population—A study of dental pathology at Alvastra, Östergötland,Sweden

The dental status of Early Iron Age agricultural populations in Sweden has not been extensively documented. The aim of this study was to record caries status in human remains from an Early Iron Age burial ground, Smörkullen, at Alvastra, Östergötland, Sweden. The study included 96 adults and 50 subadults and comprised 1794 permanent teeth in the adults and 468 permanent and 221 deciduous teeth in the subadults. The caries frequency was exceptionally high, afflicting most of the adults (92.6%): 46.2% of the teeth examined showed signs of caries disease. Most of the lesions were shallow. However, around 60% of the adult individuals had moderate and severe lesions, which probably had an immediate impact on health. Lesions were most common in the cervical region and this is probably related to dietary patterns where the starchy, sticky food tended to accumulate around the necks of the teeth. Children showed low caries frequency, whereas most juveniles (91.7%) were affected. Most of the teeth with alveolar bone loss showed no signs of cervical or root caries lesions. However, in cases of moderate and severe loss of alveolar bone, seen mostly in the older age group, the frequency of cervical and root lesions was higher. Few initial caries lesions were observed, indicating an aggressive pattern of disease in this population. The lack of gender‐related differences suggests that the diet was similar for both sexes, across all age groups. Copyright © 2010 John Wiley & Sons, Ltd.     

Skeletal evidence for morbidity and mortality in Copper Age samples from northeastern Hungary

Analysis of 183 human skeletons representing the Copper Age in northeastern Hungary indicates slightly less morbidity and mortality than found in previous studies of later Bronze Age and Iron Age samples from the same area. Mean adult age at death was 33.4 years for males and 32.9 years for females. Life table reconstruction revealed a life expectancy at birth of about 28 years, and at age 15 of about 17 years. Frequencies of dental hypoplasia (<1%) and carious lesions (2.3%) were relatively low. Comparisons of the Copper Age data reported here with previously published studies of later Bronze Age and Iron Age samples from the same area revealed little or no change in life expectancy at age 15, long bone diaphyseal circumference, estimated living stature, frequencies of dental hypoplasia, alveolar abscesses, tooth loss, adult porotic hyperostosis or trauma. Temporal increases were detected in life expectancy at birth, dental caries frequency, cribra orbitalia, subadult periosteal lesions and vertebral osteoarthritis. The study is part of a larger effort to examine long‐term temporal changes in skeletal samples from that region. Copyright © 2008 John Wiley & Sons, Ltd.     

The frequency and distribution of dental caries and tooth wear in a Byzantine population of Sa'ad,Jordan

The aim of this study was to determine the frequency, distribution and extent of dental caries and tooth wear in a Byzantine population in Sa'ad, to compare these with modern Jordanians, and to draw inferences about their lifestyle. Dental caries and tooth wear were examined in 1159 permanent teeth using direct vision and dental explorer. The location and extent of the lesions were recorded and evaluated according to defined criteria. The overall caries prevalence was 16.8% (n = 1159). Most of the carious lesions (13. 9%, n = 1159) were present in the tooth crown, on occlusal or proximal surfaces; 2.9% of teeth displayed root caries alone. The upper and lower central incisors exhibited the lowest coronal caries frequency, while molars showed the highest frequency. Attrition with moderate dentine exposure was evident in most teeth. Some teeth (9.8%) demonstrated oblique abrasion and 9 (0.78%) teeth exhibited cupped occlusal surfaces. The prevalence of caries was within the range reported for other Byzantine populations and lower than that of modern Jordanians. The attrition seen in most teeth and the cupped occlusal surfaces might be due to eating abrasive food, drinking wine or acidic beverages. Oblique abrasion on the facial and palatal surfaces reflects their business or craft, such as basket making and leather processing. Copyright © 2008 John Wiley & Sons, Ltd.     

Fruits of Their Labour: Urbanisation,Orchard Crops,and Dental Health in Early Bronze Age Jordan

The analysis of dental remains, which outlast most other tissues in the human body, provides insight into past diet, activity patterns and ancestry. The remains from Bab edh‐Dhra' represent the only skeletal sample available to assess the impact of agricultural intensification in the Early Bronze Age of the southern Levant (ca. 3500–2000 bce ). This era ushered in a period of ‘urbanisation’, evidenced by fortified towns, planned roadways, developments in irrigation and growing population density. During this time, the cultivation, trade and consumption of orchard taxa (such as figs, grapes and olives) increased. This paper examines changes in the teeth associated with agricultural intensification involving orchard crops as well as grains. Dental caries, ante mortem tooth loss and dental wear are examined for Early Bronze IA (EBIA; 3500–3300 bce ) and Early Bronze II–III (EBII–III; 3100–2300 bce ) teeth from the site of Bab edh‐Dhra', located in modern‐day Jordan. Due to the commingling, general tooth groups (e.g. molars) and specific tooth types (e.g. lower left canine) were used to compare periods. Although age and sex could not be identified for every tooth, analyses of crania and os coxae showed no significant difference in demographic profiles of EBIA and EBII–III. No statistically significant increase was found over time in dental caries frequency; however, teeth for which the cause of pulp exposure could be determined suggested that caries increasingly led to exfoliation. Indeed, ante mortem tooth loss rose significantly with time, whereas dental wear decreased. In general, changes in oral health were consistent with an archaeological record of greater consumption of softer, stickier foods, such as fruits. Copyright © 2013 John Wiley & Sons, Ltd.     

Calculus,periodontal disease and tooth decay among the prehispanic population from Gran Canaria

In the prehispanic Gran Canaria there are some anthropological differences between the coastal inhabitants who buried their dead mainly in tumuli, and those from the central mountains, mainly buried in caves. Some data, as the prevalence of auricular exostoses, and a different bone Ba/Sr ratio support the view that there were differences in economy and diet between both groups of islanders. Moreover, the proportion of carious teeth was significantly higher among the population buried in caves. In the present study we analysed the prevalence of dental calculus, periodontal disease and antemortem tooth loss in remains of 791 individuals belonging to the anthropological collection of the Museo Canario (Las Palmas). Calculus deposition was very frequent (88.51%), no differences existing between men and women or between those interred in tumuli or in caves. Age at death was the only parameter independently related to calculus deposition by stepwise multivariate analysis. Periodontal disease was observed in 66.78% of the population, significantly more in men (χ² = 4.88, P = 0.027). No differences existed between individuals buried in tumuli and in caves. Antemortem teeth loss was observed in 64.73% of individuals, no differences existing between men and women or between those interred in tumuli or in caves. There was a significant association between calculus and periodontal disease (χ² = 18.07, P < 0.0001). Both caries (χ² = 8.40, P = 0.004) and periodontal disease (χ² = 44.96, P < 0.0001) were associated with tooth decay. However, the proportion of teeth with calculus deposition (in relation to observed teeth) was significantly higher among the population buried in tumuli (Z = 3.18, P = 0.001), although no differences were observed when the proportion of antemortem lost teeth and alveoli with periodontal disease were compared among people buried in tumuli and in caves, but women showed significantly lower proportions of alveoli with periodontal disease and antemortem tooth decay. These data suggest that the population buried in caves had a different dietary pattern to that of those buried in tumuli, since calculus deposition -more frequent in the latter-may be related to the consumption of proteins. The results also point to the existence of differences in diet between men and women.     

Using plant microfossils from dental calculus to recover human diet: a case study from Tell al-Raqā'i,Syria

Dietary reconstructions based on plant microfossils, such as starch grains and phytoliths, have been useful in increasing our understanding of past human populations. Microfossils have been recovered from sediments, stone tools, and, more recently, dental calculus. Methods for recovering microfossils from dental calculus have yet to be firmly established and there is some question about potential damage to the teeth. Using a sample of teeth from the middle Holocene site of Tell al-Raqā'i, Syria, we tested using a dental pick to sample the calculus. ESEM images taken before and after sampling show no damage to the enamel surface, and examination of the recovered microfossils show that this method provides ample material for study, even when not all of the calculus is removed from the tooth. Preliminary identification of the plant microfossils suggests that these individuals were consuming a variety of plant foods, but that domesticated cereals such as wheat and barley made up a surprisingly small portion of their diet.     

Spiro Mounds,Oklahoma: Dental Evidence for Subsistence Strategies

Spiro Mounds was a ceremonial complex located on the Arkansas River, situated in a natural corridor between the Southeast, the Plains, and the Southwestern United States. Considered a quintessential Mississippian site (ad 1000–ad 1450), Spiro was strategically placed as a cultural gateway. Here, dental evidence is presented to aid in the determination of dietary regime and overall population health. The hypothesis regarding the delayed transition to maize agriculture in the Arkansas River Valley will be tested through population comparisons of dental remains. This study will expand the bioarchaeological investigation of a region that has had limited systematic examination. Statistical analysis showed a significant difference between Alluvial, Upland, and Plains environmental zones, and the pattern of dental pathology. Assaults on the dentition at Spiro are moderate. Caries and hypoplasia rates fall just under but approaching those expected for agricultural populations (57% and 49%, respectively). The high number of occlusal caries indicates slower cariogenic destruction and a slower attrition rate. Ante mortem tooth loss was low (18%), with moderate dental attrition (61%). The dental analysis of Spiro Mounds reveals a population with little generalised stress resulting from environmental or sociocultural influences. Comparisons of Spiro to other larger sites in the Mississippian sphere is revealing regarding widespread cultural traditions and their affect on population health; Spiro's unique circumstances give evidence of a population in transition to maize agriculture, but not fully committed to it. Higher status individuals were slower to change from the subsistence strategies that had made them biologically successful. Recent isotope data support this conclusion. The delayed role of maize agriculture at Spiro Mounds, as well as its ideal location within the Mississippian sphere, indicates a different social evolution than other influential Mississippian centres. Copyright © 2015 John Wiley & Sons, Ltd.