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Table 1 Characteristics and data of the studies included in the systematic review; N (number), m (male), f (female), U (Unknown), AD (Anno Domini), BC (Before Christ), \ (No data, data not reported)

From: Investigation of the presence of Non-carious cervical lesions (NCCLs) in ancient adult skulls: analyzing data from prehistoric and historical samples through a systematic review and meta-analysis

First autor, data

Country

Site and period of the finds

Sex

N ancient skulls

N of teeth examined

N of NCCL

N Ancient skulls with NCCL

N of modern skulls

N of teeth examined, NCCL

N of modern skulls with NCCL’

Professional or academic training of observers (diagnostic skills)

Kieser et al., 2001 [33]

New Zealand

pre-contact New Zealand Maoris d

50 (27 m, 23 f)

50

\

\

0

\

\

\

Dentist, Orthodontics

Aubry et al. 2003 [29]

France

Roaix, (2150–2090 BC)

Saint-Pierre de

l’Almanarre, (1100–1300 AD),

Notre-Dame du

Bourg (1300–1400 AD)

Roaix 76 (14 m, 12 w, 50 U), Saint-Pierre de

l’Almanarre 100 (60 m, 40 f), Notre-Dame du

Bourg 56 (19 m, 9 f, 28 U)

259

3927

0

0

238

6,1451\277 NCCLs

62

Anthropologist, Dentist

Aaron, 2004 [30]

USA

Northern Illinois (11th century), South Dakota (17th century)

Northern Illinois 50 (26 m, 24 f), South Dakota 50 (25 m, 25 f)

100

2553

0

0

198

3,524 teeth in the modern skulls, 57 NCCLs

19

Dentist, Periodontology

Ritter et al., 2009 [34]

USA

AD 650 to

the late 19th century: 23 Labrador, Canada ( native americans 500 years old); 23 Merida, Mexico (late 19th century); 13 from the Mimbres Valley sites in New Mexico (AD 650–950); 23 Madisonville, Ohio, USA (AD 1275–1640). 22 from Mistihalj, Montenegro (15th and 16th centuries)

labrador 23 (7 m, 16 f), Merida 23 (14 m, 9 f), New Mexico 13( 10 m, 3 f), Ohio 23 (12 m, 11 f), Montenegro 22 (15 m, 7 f)

104

\

\

7

\

\

\

Dentist, Archaeologist

Bondioli et al. 2012 [32]

Italy

Pakistani Neolithic site of

Mehrgarh

\c

225

3577b

123

10

\

\

\

Anthropologist, Archaeologist, Biologist

Urzúa et al. 2015 [31]

Chile

San Pedro de Atacama oases are located in the northeast of Chilete de Chile, 400–1300 AD

\

67

1521a

0

0

\

\

\

Dentist

  1. aThe number of teeth was extrapolated from the average number of teeth per individual multiplied by the number of individuals
  2. bThe number concerns only the permanent teeth with the deciduous ones would be 3880
  3. cThe Skulls with NCCL are male (10 in total)
  4. dThe place where the remains (Skulls) were found is not specified in the manuscript (New Zealand?)
  5. To provide further clarification of the six included studies, four studies, despite explicitly examining the presence of NCCLs as outlined in the materials and methods sections and reported in the results, did not identify the existence of NCCLs in ancient skulls