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. 2023;52(2):77–87. doi: 10.5644/ama2006-124.407

Table 1.

Descriptive Statistical Parameters: Diagnosis, Angulation, Crown Shape, and Depth of Impaction of Maxillary and Mandibular Third Molars

A Maxillary third molars

Diagnosis N (%) Angulation N (%) Shape of the crown N (%) Root morphology according to Alavi N (%) Depth in relation to occlusal plane N (%)
Impacted 39 (63.93) Vertical 37 (60.66) Oval 7 (11.47) Class I 4 (6.55) A 6 (9.84)

Partially impacted 22 (36.07) Mesioangular 14 (22.95) Cubic 2 (3.28) Class II 5 (8.20) B 15 (24.59)

Distoangular 9 (14.75) Rectangular 1 (1.64) Class III 12 (19.67) C 40 (65.57)

Horizontal - Rhomboid 19 (31.15) Class IV 16 (26.23)

Linguoangular - Circular 4 (6.55) Class V 2 (3.28)

Buccoangular 1 (1.64) Triangular 22 (36.07) Class VI 2 (3.28)

Trapezoidal 6 (9.84) Class VII 4 (6.55)

Class VIII 3 (4.92)

Class IX 6 (9.84)

Class X 7 (11.48)

Total 61 (100) Total 61 (100) Total 61 (100) Total 61(100) Total 61 (100)

B Mandibular third molars

Diagnosis N (%) Angulation N (%) Shape of the crown N (%) Root morphology according to Machado N (%) Depth in relation to occlusal plane N (%)

Impacted 50 (43.48) Vertical 71 (61.74) Oval 44 (38.26) Convergent 16 (13.91) A 39 (33.91)

Partially impacted 65 (56.52) Mesioangular 32 (27.82) Cubic 19 (16.52) Parallel 25 (21.73) B 55 (47.83)

Distoangular 4 (3.48) Rectangular 12 (10.43) Fused 43 (37.39) C 21 (18.26)

Horizontal 3 (2.61) Rhomboid 4 (3.48) Single 4 (3.47) - -

Linguoangular 5 (4.35) Circular 7 (6.09) Dilaceration 19 (16.52)

Buccoangular - Triangular 5 (4.35) Divergent 8 (6.95)

Trapezoidal 24 (20.87)

Total 115 (100) Total 115 (100) Total 115 (100) Total 115 (100) Total 115 (100)