[db-007] 1P031 : 中国人（山東省）上顎大臼歯の歯冠形態

• To: db-abst@sapmed.ac.jp
• Subject: [db-007] 1P031 : 中国人（山東省）上顎大臼歯の歯冠形態
• From: kondos@dent.showa-u.ac.jp
• Date: Sat, 08 Mar 1997 15:51:07 +0900

##Begin
#Z 1P031
#A 中国人（山東省）上顎大臼歯の歯冠形態
#B Crown structure of the maxillary molars of
 Chinese living in Shandong province
#E1 宋／文霞
#F1 そう／ぶんか
#G1 Song/Won Xia
#J1 昭和大学歯学部第一口腔解剖学教室
#K1 しょうわ だいがく しがくぶ だいいち
 こうくうかいぼうがく きょうしつ
#L1 First Department of Oral Anatomy,Showa University
School of Dentistry
#E2 近藤／信太郎
#F2 こんどう／しんたろう
#G2 Kondo/Shintaro
#J2 昭和大学歯学部第一口腔解剖学教室
#K2 しょうわ だいがく しがくぶ だいいち
 こうくうかいぼうがく きょうしつ
#L2 First Department of Oral Anatomy,Showa University
School of Dentistry
#E3 若月／英三
#F3 わかつき／えいぞう
#G3 Wakatsuki/Eizo
#J3 昭和大学歯学部第一口腔解剖学教室
#K3 しょうわ だいがく しがくぶ だいいち
 こうくうかいぼうがく きょうしつ
#L3 First Department of Oral Anatomy,Showa University
School of Dentistry
#M 歯科人類学,中国人,大臼歯,歯のサイズ,咬頭サイズ,退化
#N dental anthoropology,Chinese,molar,tooth size,
cusp size,reduction
#T The crown structures of the maxillary molars were
analyzed from a metrical perspective. Materials used were
plaster casts obtained from 100 male Chinese living in Jinan
 (Shandong province). Dimensions of the crown were measured
with a digital caliper (0.01mm). The dimensions of the
crown included mesiodistal and buccolingual diameters, the
distances to the direction of the diagonal line, the cusp
sizes, and intercusp distances. The molar size sequences
and reduction index were calculated in order to compare
first and second molars (M1, M2). M1 was larger in the
mesiodistal direction (P<0.01). M2 had slightly larger
buccolingual diameter than M1 did, but the difference
between them was not significant. The diagonal sizes were
significantly larger in M1 than in M2 (P<0.01), but the
proportion of the diagonals was not different between them.
The intercusp distances were also significantly larger in
M1 (P<0.01). The distal two cusps were more developed in M1
than in M2, while the mesial two cusps were nearly the same
sizes in M1 and M2. It is concluded that the mesial part
of the crown which is formed early in the developmental
stage, is relatively stable area in the molars.
#Last_modified 97.03.08-15:51
#Return_path kondos@dent.showa-u.ac.jp
#Sequence_number   7
##End

• Prev: [db-008] 3A03 : マクロファージの貪食過程におけるPI3kinaseとtyrosine kinaseの関与
• Next: [db-006] 3P082 : 同一サイズの Immunogold による電顕免疫二重染色法
• Index(es):
  • Main
  • Thread