Can withe patches inside my mouth be assosiated with my contact dermatitis?

Probably not : Related. White spots inside the mouth could mean a condition called leukoplakia, a precancerous condition. So have an oral surgeon or head & neck surgeon look at it.

See below: See your dermatologist or primary care MD for a definitive diagnosis. If needed, you may be referred to a general dentist for further intraoral evaluation.

White oral patches: The white patches in your mouth can be caused by a host of conditions and may or may not be related to a more systemic medical condition. There is insufficient medical and dental history and more descriptive and detailed information to even venture an educated guess. Please see your own dentist for an evaluation and recommendations.