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" If you have to have a dental procedure , nobody 's looking forward to it . One tradition that flourished 200 years ago in Japan , during its period of isolation from the western world , involved Euclidean geometry . It allows doctors to halt treatment against the wishes of a patient 's family when they think its continuation would be futile and unethical . That 's offered at The Hills Dental Spa in Austin , Texas , where amenities also include herbal teas and lavender aromatherapy candles to disguise that medicinal dental office smell . For $ 95 extra , the Madison Avenue office last year began offering acupuncture by a trained hygienist , for relaxation during dental procedures . " So it seems odd to see " dental spa " written across the clear glass doors of a dentist 's office in Chicago 's tony Water Tower building , and to hear soothing classical music as you lie on a cushy massaging reclining chair while the hygienist readies her tooth scraper . Spa services are an extension of that trend , said Dr. Matthew Messina , a dental association spokesman . " As a rule , we do n't comment publicly about which firms may or may not have a contractual relationship with the agency , " he said .