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();
        }