
五乳牙髓腔形态乳牙髓腔形态特点乳牙的髓腔形态虽与乳牙的外形相似,但按牙体比例而言,乳牙髓腔较恒牙者为大,表现为:髓室大、髓壁薄、髓角高、根管粗、根管方向斜度较大,根尖孔亦大。乳前牙髓腔与其牙冠外形相似,根管多为单根管偶见下颌乳切牙根管分为唇、舌向二根管
五 乳牙髓腔形态 ◼ 乳牙髓腔形态特点 乳牙的髓腔形态虽与乳牙的外形相似,但按牙体 比例而言,乳牙髓腔较恒牙者为大,表现为: 髓室大、髓壁薄、髓角高、根管粗、根管方向斜 度较大,根尖孔亦大。 ◼ 乳前牙髓腔与其牙冠外形相似,根管多为单根管, 偶见下颌乳切牙根管分为唇、舌向二根管

根尖孔Apicalforamen根管Root canal髓室精室顶PulpchamberRoafofpulpchamher图1-271右上颌乳中切牙髓腔(近远中切面,舌面观)Pulp cavity of a maxillary right deciduous central incisor(mesiodistalsection,lingualview)

根尖孔Apicalforamen根窖Root canal備室髓室顶Pulp chamberRoofofpulpchamber图1-272右上颌乳侧切牙髓腔(近远中切面,舌面观Pulp cavity of a maxillary right deciduous lateralincisor(mesiodistalsection,lingualview)

根尖孔Apicalforamen根管Root canal简室Pulpchamber髓角pulphom图1-273右上颌乳尖牙髓腔(近远中切面,舌面观)Pulp cavity of a maxillary right deciduous canine(mesiodistalsection,lingualview)

薪室顶髓室RoofofpulpchamherPulpchamber根管Root canal根尖孔Apical foramen图1-274右下颌乳中切牙髓腔(近远中切面,舌面观Pulp cavity of a mandibular right deciduous central incisor(mesiodistalsection,lingualview)

髓室顶Roofofpulpchamber髓室Pulpchamber根管Root canal根尖孔Apical foramen图1-275右下颌乳侧切牙髓腔(近远中切面,舌面观)Pulp cavity of a Mandibularright deciduous lateral incisor(mesiodistalsection,lingualview)

髓角pulphorn髓室Pulpchamber根管Root canal根尖孔Apical foramen图1-276右下颌乳尖牙髓腔(近远中切面,舌面观Pulp cavity of a madibular right deciduous canine(mesiodistal section,lingual view)

乳磨牙髓腔形态髓室较大,通常均有三个根管上颌乳磨牙有两个颊侧根管,一个舌侧根管;下颌乳磨牙有两个近中根管,一个远中根管。下颌第二乳磨牙有时可出现四根管,其分布为近中两个根管,远中两个根管
乳磨牙髓腔形态 ◼ 髓室较大,通常均有三个根管: ◼ 上颌乳磨牙有两个颊侧根管,一个舌侧根 管;下颌乳磨牙有两个近中根管,一个远 中根管。 ◼ 下颌第二乳磨牙有时可出现四根管,其分 布为近中两个根管,远中两个根管

根尖孔Apical foramen近颊根管远颊根管Mesiobuccal rootcanalDistobuccal root canal根管口髓室底Root canal orificeFloor of pulp chamber髓室Pulp chamber频侧髓角Buccal pulp horn图1-277右上颌第一乳磨牙髓腔(颊侧近远中切面,颊面观)Pulp cavity of a maxillary right first deciduous molar(buccal mesiodistal section,buccal view)

近颊根管根尖孔Mesiobuccal root canalApicalforamen根管口远颊根管Root canal orificeDistobuccal root canal髓室底髓室Floor of pulp chamberPulp ehamber远颊髓角近颊髓角Distobuccal pulp hornMesiobuccal pulp horn髓室顶Roof of pulp chamber图1-278右上颌第二乳磨牙髓腔(侧近远中切面,颊面观)Pulp cavity of a maxillary right second deciduous molar(buccalmesiodistalsection,buccalview)