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Table 14 Number of respondents according to number of their assosciates ever wearing aligners

From: Orthodontic treatment demand for fixed treatment and aligners among young adults in middle Europe and South America – a questionnaire study

Country/Answer

A. None

B. One

C. Two

D. More than two

Chile

277 (41,3%)

139 (20,7%)

91 (13,6%)

163 (24,4%)

Poland

185 (43,8%)

100 (23,7%)

50 (11,8%)

87 (20,6%)

Sum

462

239

141

250

Difference CL/PL

0.453

0.283

0.460

0.178

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BMC Oral Health

ISSN: 1472-6831

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