perm. posterior teeth week 4

Maxillary 1st molar (Facial View)

Has trapezoidal outline

Maxillary 1st molar (Facial View)

Mesial outline is straighter than the distal outline

Maxillary 1st molar (Facial View)

It has 4 major cusps: 2 buccal cusps mesiobuccal and distobuccal, and 2 lingual cusps mesiolingual, distolingual, and a fifth cusp thecusp of Carabelli which is associated with the mesiolingual cusp

Maxillary 1st molar (Facial View)

It has a facial developmental groove that may end in a developmental pit

Maxillary 1st molar (Facial View)

It has pronounced buccal cervical ridge

Maxillary 1st molar (Facial View)

Trifurcated: two facial roots mesiobuccal and distobuccal, and one lingual root

Maxillary 1st molar (Facial View)

The mesiobuccal root is bigger than the distobuccal root

Maxillary 1st molar (Facial View)

The furcations are facial, mesial, and distal

Maxillary 1st molar (Facial View)

The route trunk is 4mm from this view

Maxillary 2nd molar (Facial view)

It has 4 cusps: two facial cusps and two lingual cusps

Maxillary 2nd molar (Facial View)

It is shorter and smaller than the first molar

Maxillary 2nd molar (Facial View)

The buccal cervical ridge is not as pronounced on the second molar as it is on the maxillary first molar

Maxillary 2nd molar (Facial View)

Trifurcated: two facial roots mesiobuccal and distobuccal, and one lingual root

Maxillary 2nd molar (Facial View)

The roots are closer and more parallel

Mandibular 1st molar (Facial View)

Has trapezoidal outline

Mandibular 1st molar (Facial View)

It has 5 cusps: three buccal cusps from biggest to smallest: mesiobuccal, distobuccal, and distal, and two lingual cusps mesiolingual, distolingual

Mandibular 1st molar (Facial View)

The lingual cusps are taller than the buccal cusps

Mandibular 1st molar (Facial View)

Separating the two buccal cusps are two facial developmental grooves: the mesiobuccal developmental groove that may end in a facial developmental pit. and the distobuccal developmental groove

Mandibular 1st molar (Facial View)

Bifurcated: mesial root larger than the distal root (banana shape)

Mandibular 2nd molar (Facial View)

It has 4 cusps, two facial cusps and two lingual cusps

Mandibular 2nd molar (Facial View)

The lingual cusps are taller than the buccal cusps

Mandibular 2nd molar (Facial View)

It has one facial developmental groove separating the facial cusps

Mandibular 2nd molar (Facial View)

Bifurcated: mesial root larger than the distal root

Maxillary 1st molar (Lingual View)

The three lingual cusps are visible

Maxillary 1st molar (Lingual View)

Exception to the rule, the lingual surface is wider mesiodistally than the facial surface means the tooth diverge toward the lingual

Maxillary 1st molar (Lingual View)

The mesiolingual cusp is the biggest then the distolingual cusp then the cusp of Carabelli which is associated with the mesiolingual cusp

Maxillary 1st molar (Lingual View)

The lingual root is the biggest root; it ends in a blunt apex

Maxillary 2nd molar (lingual View)

From this view the two lingual cusps are visible, the mesiolingual cusp is wider and taller than the distolingual cusp

Maxillary 2nd molar (lingual View)

The lingual root is simple and rounded

Mandibular 1st molar (Lingual View)

From this view the two lingual cusps are visible, which are taller and sharper than the buccal cusps and there is one lingual developmental groove separating them

Mandibular 1st molar (Lingual View)

The root trunk is longer on the lingual than on the facial

Maxillary 1st molar (Mesial View)

From this view the mesiobuccal cusp and mesiolingual cusp are visible, and the mesiobuccal root and lingual root are visible

Maxillary 1st molar (Mesial View)

The mesiobuccal root is wide faciolingually, it has depression and commonly contains two root canals

Maxillary 1st molar (Mesial View)

The lingual root is widely divergent beyond the boundary of the crown

Maxillary 1st molar (Mesial View)

The root trunk is 3mm from this view

Maxillary 2nd molar (Mesial View)

From this view two cusps and two roots are visible: mesiobuccal and mesiolingual cusps, mesiolingual root and lingual root

Mandibular 1st molar (Mesial View)

From this view the two mesial cusps are visible, mesiobuccal and mesiolingual

Mandibular 1st molar (Mesial View)

The mesial root is visible, which is wider and longer than the distal root and it has root depression and two root canals

Mandibular 2nd molar (Mesial View)

The mesial root is visible, which is wider and longer than the distal root with one root canal

Maxillary 1st molar (Distal View)

There is deep crown concavity apical to the distal contact continues onto the root

Maxillary 1st molar (Distal View)

The distal marginal ridge is shorter and narrower than the mesial marginal ridge

Maxillary 1st molar (Distal View)

The root trunk is 5mm from this view

Maxillary 2nd molar (Distal View)

The occlusal table is slightly visible because the distal marginal ridge is shorter than the mesial marginal ridge

Maxillary 2nd molar (Distal View)

Distal cusps, distobuccal and distolingual, are visible

Maxillary 2nd molar (Distal View)

The mesial cusps tips are visible

Maxillary 2nd molar (Distal View)

The three roots are visible

Mandibular 1st molar (Distal View)

From this view the distal cuspvand distolingual cusp are visible and the tips of the other cusps are visible too because the distal marginal ridge is short and narrow

Mandibular 1st molar (Distal View)

The tooth tapers distally

Mandibular 1st molar (Distal View)

The distal root is shorter than the mesial root and it is conical in shape and has one root canal

Mandibular 2nd molar (Distal View)

The two distal cusps are visible, and the tips of the mesial cusps are visible

Mandibular 2nd molar (Distal View)

The distal root is conical in shape and simple

Maxillary 1st molar (Occlusal View)

The most complex occlusal table

Maxillary 1st molar (Occlusal View)

The outline is rhomboidal with bulky mesial half

Maxillary 1st molar (Occlusal View)

The crown is wider faciolingually than mesiodistally

Maxillary 1st molar (Occlusal View)

The cusps from the biggest to smallest are: Mesiolingual, mesiobuccal, distobuccal, distolingual, and cusp of Carabelli

Maxillary 1st molar (Occlusal View)

Beside the marginal ridges mesial and distal there is an oblique ridge formed from the triangular ridges of mesiolingual and distobuccal cusps collectively

Maxillary 1st molar (Occlusal View)

Developmental grooves are: central, buccal, distal oblique,

lingual, the groove that separates the cusp of Carabelli from the

mesiolingual cusp

Maxillary 2nd molar (Occlusal View)

Less complex than the first molar

Maxillary 2nd molar (Occlusal View)

-Four cups type with rhomboidal outline, The cusps from the

biggest to smallest are: Mesiolingual, mesiobuccal, distobuccal,

distolingual

Maxillary 2nd molar (Occlusal View)

-Three cusps type with heart shape

The cusps from the biggest to smallest are: lingual, mesiobuccal, and distobuccal

Maxillary 2nd molar (Occlusal View)

The tooth is wider faciolingually than mesiodistally as all maxillary molars

Maxillary 2nd molar (Occlusal View)

Developmental groove are: central, buccal, and lingual

Mandibular 1st molar (Occlusal View)

The outline is pentagonal in shape

Mandibular 1st molar (Occlusal View)

The tooth is wider mesiodistally than faciolingually

(like all mandibular molars)

Mandibular 1st molar (Occlusal View)

The crown converged lingually

Mandibular 1st molar (Occlusal View)

Developmental grooves are: central (extends mesiodistally), mesiobuccal, distobuccal, and lingual

Mandibular 1st molar (Occlusal View)

The groove pattern is Y shape

Mandibular 1st molar (Occlusal View)

It has three fossae: central, and mesial and distal triangular fossae

Mandibular 2nd molar (Occlusal View)

The outline is rectangular in shape

Mandibular 2nd molar (Occlusal View)

It has three developmental grooves: central (the longest), facial, and lingual

Mandibular 2nd molar (Occlusal View)

The groove pattern is cross shaped (+)

Mandibular 2nd molar (Occlusal View)

It has three fossae: central, and mesial and distal triangular fossae

Maxillary 1st molar (Cross Section)

Rhomboidal shape with four orifices: two for mesiobuccal root, one for distobuccal root, and one for lingual root

Maxillary 2nd molar (Cross Section)

Rhomboidal shape with three orifices: one for mesiobuccal root, one for distobuccal root, and one for lingual root

Mandibular 1st molar (Cross Section)

Wider mesiodistally than faciolingually with three orifices: two for mesial root and one for distal root

Mandibular 2nd molar (Cross Section)

Wider mesiodistally than faciolingually with two orifices: one for mesial root and one for distal root