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A Show-Case of Surgical Treatment of Fused Maxillary Literal Incisor

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Abstract

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Menezer¿¡ ÀÇÇϸé À¯ÇÕÀº À¯Ä¡ ¿­¿¡¼­ Ä¡¾Æ°á¼Õ, °úÀ×Ä¡¿Í ´õºÒ¾î ÈçÈ÷ º¼ ¼ö ÀÖ´Â ÇüÅÂ
ÀÌ»óÀ¸·Î À̵é À¯ÇÕÄ¡´Â spacing, Ä¡ÁÖ, º¸Á¸ÀûÀÎ ¹®Á¦ ¹× ¿Ü¸ð¿Í °ü·ÃµÈ ¿©·¯ ¹®Á¦¸¦ ¾ß±â
ÇÒ ¼ö ÀÖ´Ù. º¸Åë ½Ö»ýÄ¡¿Í À¯»çÇϱ⠶§¹®¿¡ Mader´Â µÎ°³ÀÇ Ä¡¾Æ°¡ »ó¾ÆÁú¿¡ ÀÇÇØ °áÇÕµÇ
¾úÀ» °æ¿ì 'fused teeth'¶õ ¿ë¾î¸¦ »ç¿ëÇÏ¿´´Âµ¥ ÀϹÝÀûÀ¸·Î À¯ÇÕÀ̶õ µÎ°³ÀÇ ºÐ¸®µÈ tooth
germÀÌ »ó¾ÆÁú¿¡¼­ °áÇÕµÈ °ÍÀ¸·Î Á¤ÀǵǴ ¹Ý¸é ½Ö»ýÄ¡´Â ÇϳªÀÇ tooth germÀÌ ºÎºÐÀûÀ¸
·Î ³ª´µ¾îÁ® ¸íÈ®ÇÑ µÎ°³ÀÇ ÇüŸ¦ ÀÌ·é °æ¿ì·Î¼­ À¯ÇÕÀÌ ¹ý¶ûÁú°ú »ó¾ÆÁú¿¡¼­ ÀϾÀ» °æ
¿ì¸¦ 'true fusion'À¸·Î »ó¾ÆÁú°ú ¹é¾ÇÁú¿¡¼­ ÀϾÀ» °æ¿ì¸¦ 'late fusion'À¸·Î
Tannenbaum°ú AllingÀº ±¸º°ÇÏ¿´´Ù. À¯ÇÕÄ¡ÀÇ ¹ß»ý ºóµµ´Â ¼­¾çÀÎÀ» ´ë»óÀ¸·Î ÇÑ Á¶»ç¿¡¼­
Menezer, Clayton, Grahnen, Pindborg µîÀÌ 0.5¡­2.5%·Î ´ë°³ 1% ÀÌÇÏÀÇ ³·Àº ¹ß»ýÀ» º¸°í
ÇÑ ¹Ù ÀÖÀ¸¸ç ±¹³»¿¡¼­´Â ¼Ò, ÀÌ, ÀÌ, ÀÌ µîÀÇ Á¶»ç¿¡¼­ °¢°¢ 1.25%, 1.03%, 3.39%, 2.1%À»
º¸°íÇÑ ¹Ù µ¿¾çÀο¡¼­ ´Ù¼Ò ºó¹øÈ÷ ³ªÅ¸³­´Ù°í ¾Ë·ÁÁ® ÀÖ´Ù.
#ÃÊ·Ï#
Fusion of teeth is a morphological anomaly that is often observed along with missing
or supernumerary teeth, and it causes many problems in periodontal, restorative, and
esthetic aspects. The incidence of fusion is less than 1% ; it occurs most often between
a incisor and a canine, and no prevalence exists between maxilla and mandible. The
exact etiology factor of fusion is unknown, but genetic and environmental factors seem
to be related. Differential diagnosis of gemination and fusion is accomplished by the
number of roots and/or canals, but when a supernumerary tooth is involved, the
differential diagnosis becomes more complicated. In the show-case, the patient expressed
chief complaints of abnormal morphology and cross bite caused by a fusion between
maxillary left lateral incisor and supernumerary tooth ; the supernumerary tooth was
surgically removed, and apexification was performed for the lateral incisor that showed
irreversible pulpitis. During the surgical extraction, the least amount possible of buccal
bone should be removed, and pulp treatment for the exposed pulp should be performed
as soon as possible. The most important determinant in successful surgical treatment is
location of fusion ; the treatment time can be delayed until the root formation is
completed and until pulp chamber size has decreased to lessen possibility of pulp
exposure. In the show-case, however, the labially erupted supernumerary tooth caused
mastiatory and esthetic problems, and thus the treatment was performed immediately.

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