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I nside a patient’s mouth, the upper anterior incisors  and canines are sometimes referred to by dentists as  the “social six,” a nod to the importance of aesthetics  when it comes to these very visible anterior teeth.  Regardless of how well they’re cared for, the alignment  of anterior teeth gradually changes as a result of the  aging process, and interdental space or protrusions  occur with periodontal disease. Therefore, orthodontic  treatment for anterior teeth is increasingly in demand  for image-conscious adults. orthodontic treatment without invasive tooth  preparation Most patients come to our dental clinic complaining  of anterior crowding or protrusions. Rapid orthodontic  treatment is one option that has been advertised widely  in recent years, but this treatment option is often a high- ly invasive treatment known as a “dental laminate.” The  method is totally different from conventional orthodon- tic treatment, as the intact tooth structure is removed  through an intensive process called tooth preparation  (the removal of unhealthy material before the procedure  begins). It’s fast, but the damage done to your teeth is  irreversible.  In addition, the actual long-term prognosis for the  function and aesthetics of the laminate are questionable  when endodontic treatment is added from excessive  tooth preparation. When handled properly, orthodontic  treatment for aligning the anterior teeth is a noninvasive  treatment, and this approach can be applied selectively  to the anterior teeth when posterior occlusion is suit- able. How to have beautiful  teeth without invasive  preparation For further information  or reservations,  call Ms. Kelly Soe,  the English coordinator  at Yonsei University  Dental Hospital.         +82 2 2228 8998         +82 2 363 0396         idc@yuhs.ac         50-1 Yonsei-ro,  Seodaemun-gu, Seoul www.yuhs.or.kr/ en/hospitals/dent_ hospital/Conserv_ dentist/Intro  COLUMN  •  YonsEI UnIvErsITY dEnTaL HosPITaL Jung-Yul Cha, DDS, Ph.D. Associate Professor Department of Orthodontics Dental College, Yonsei University Seodaemun-gu, Yonsei-ro 50, Seoul, Korea variety of approaches possible for anterior  aligning treatment For anterior teeth alignment, it is possible to target  specific teeth using invisible treatments such as clear  aligner or lingual orthodontic treatment. Both these  approaches are suitable for adults without causing any  social embarrassment from wearing a device. In recent  years, many small orthodontic appliances have been  introduced to improve occlusion while also helping re- duce patients’ discomfort and treatment periods. One must keep in mind, however, that selective  alignment is a limited treatment and assumes the pa- tient has had a harmonious occlusion. Therefore, a  more comprehensive treatment may also be chosen  by orthodontic specialists for a patient who has a major  occlusion problem, severe protrusion and rotation of  the anterior teeth, which can help guarantee a long- term prognosis without the risk of relapse (reverting  back to crowding). Lifetime retention is recommended Once misalignment of the anterior teeth is resolved  properly, patients want good retention for life. Fixed  retainers can be applied into the lingual side of the  anterior teeth to prevent dental relapse. This retainer  is very thin and nearly invisible, but periodic checkups  are essential to maintain retention over the years. A  beautiful smile and beautiful teeth alignment can be  achieved and maintained by persistent interest in oral  health.