X hits on this document

68 views

0 shares

0 downloads

0 comments

6 / 15

demineralization continues, softening intertubular dentin

Gram stain

X220

bacteria begin to spread laterally from the dentinal tubules

larger micro-cavities form in tubules as surrounding dentin softens and distorts

X355

  • lling with breakdown products of the dentin matrix &

proliferating bacteria

increasing proteolytic bacteria activity tears the demineralized matrix apart

Gram stain

X220

extensive areas of tissue breakdown form

invasion and destruction of dentin is not uniform demineralization of matrix occurs unevenly

X220

infected tubule with localized destruction of surrounding intertubular matrix forming micro-cavities

transverse clefts open up perpendicular to dentinal tubules probably following incremental growth lines & ll with breakdown products & bacteria

X90

macroscopically dentin becomes leathery pieces are easily pealed away by an explorer

until nally only traces of recognizable dentin tissue remain

Gram stain

X220

saprophytic micro-organisms help complete destruction

6

Document info
Document views68
Page views77
Page last viewedSun Dec 11 01:04:23 UTC 2016
Pages15
Paragraphs447
Words1730

Comments