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hi, do you know what is meaning of below sentence in manual of WREB for class II cavity preparation.
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"Proximal and gingival extensions are visually open and break contact up to 1mm."
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it is easy to understand that Proximal extensions are visually open and break contact up to 1mm.
but it is difficult for me to understand gingival extensions (or gingival floor) are visually open and break contact up to 1mm. In my opinion, the gingival extension (or gingival floor) break contact more than 1 mm in most condition, not up to 1mm.
can your guy help figure this question?
thanks
__________________________________________________
"Proximal and gingival extensions are visually open and break contact up to 1mm."
____________________________________________________
it is easy to understand that Proximal extensions are visually open and break contact up to 1mm.
but it is difficult for me to understand gingival extensions (or gingival floor) are visually open and break contact up to 1mm. In my opinion, the gingival extension (or gingival floor) break contact more than 1 mm in most condition, not up to 1mm.
can your guy help figure this question?
thanks