Читать книгу Periodontics - Fernando Suarez - Страница 31

Glickman (1958) divided furcation involvement into 4 grades²¹:

 Grade I: Pocket formation into the flute but intact interradicular bone. Incipient lesion.

 Grade II: Loss of interradicular bone and pocket formation of varying depths into the furcation area but not completely through to the opposite side of the tooth.

 Grade III: Through-and-through lesion.

 Grade IV: Same as Grade III with through-and-through lesion with gingival recession, rendering the furcation area clearly visible on clinical examination.

Hamp et al (1975) proposed three levels of furcation involvement²² (Fig 2-5):

Fig 2-5 Different degrees of furcation involvement.

 Degree I: Horizontal loss of periodontal tissue support < 3 mm.

 Degree II: Horizontal loss > 3 mm, but not passing the total width of the furcation.

 Degree III: Horizontal through-and-through destruction.