public void Create(CommentDTO commentDTO)
{
var tooth = _context.Teeth.Find(commentDTO.ToothId);
var comment = CommentMapper.DTOtoComment(commentDTO);
comment.Tooth = tooth;
comment.Created = DateTime.Now;
comment.UserId = _userProviderService.GetUserId();
_context.Comments.Add(comment);
_context.SaveChanges();
}