Читать книгу Shear's Cysts of the Oral and Maxillofacial Regions - Paul M. Speight - Страница 64

Table 4.1 summarises the reported frequencies of inflammatory collateral cysts in selected series from a wide geographical distribution. Data are taken from the same references shown in Table 1.3 (Chapter 1) and from the frequencies encountered in the larger series shown in Table 4.2. Almost without exception, the authors of the papers cited in Table 1.3 used ‘paradental cyst’ as a generic term for all inflammatory collateral cysts, so these frequencies include both paradental cysts and mandibular buccal bifurcation cysts.

The frequency ranges from 0 to 13.6% of odontogenic cysts (Table 4.1). Those authors who presented series of paradental cysts found that they comprised between 3.0 and 4.7% of odontogenic cysts encountered in their departments (Craig 1976 ; Ackermann et al. 1987 ; de Sousa et al. 2001 ).

In Shear's large series of 3496 jaw cysts from South Africa (see Table 1.1), there were 109 inflammatory collateral cysts representing 3.1% of all jaw cysts and 3.6% of odontogenic cysts. In Craig's original series (Craig 1976 ), paradental cysts comprised 4.7% of 1051 odontogenic cysts, and in a recent study from the same department (Jones et al. 2006 ), a diagnosis of paradental cyst was made on 402 occasions over a 30‐year period (1975–2004), representing 5.6% of 7121 odontogenic cysts.