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. 2024 Jul 6;20(1):342–349. doi: 10.1016/j.jds.2024.07.001

Table 2.

Comparison of occlusal condition according to Eichner's classification of the two group.

Eichner's classification (n, %) Prosthetic (n = 193) TMD (n = 199) P-value
Class A 61 (31.6) 171 (85.9) <0.001a
A1 23 (11.9) 113 (56.8)
A2 22 (11.4) 47 (23.6)
A3 16 (8.3) 11 (5.5)
Class B 91 (47.2) 24 (12.1) <0.001a
B1 31 (16.1) 10 (5.0)
B2 24 (12.4) 5 (2.5)
B3 19 (9.8) 5 (2.5)
B4 17 (8.8) 4 (2.0)
Class C 41 (21.2) 4 (2.0) <0.001a
C1 5 (2.6) 0 (0.0)
C2 22 (11.4) 3 (1.5)
C3 14 (7.3) 1 (0.5)
a

, chi-square. TMD temporomandibular disorder. A1, four support zones with no teeth lost; A2, four support zones with tooth loss on one side; A3, four support zones with tooth loss on both side; B1, three support zones; B2, two support zones; B3, only one support zones; B4, no support zones, occlusal contact at anterior teeth; C1, no support zones, teeth remaining on both arches; C2, one edentulous arch; C3, two edentulous arches.