IMPACT THIRD MOLAR

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IMPACT THIRD MOLAR
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Etiology 1.Orthodontic
theory 2.Phylogenic theory 3.Mendelian
theory 4.Systemic theory
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Indication
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Pericoronitis
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Periodontitis
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Caries
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Resorption
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Cyst
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Osteoradionecrosis
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Pain
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Prosthodontic
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Crowding
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Mandibular fracture
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Contraindication
1.????????????????????????????????????????????????
??????????? 2.??????????????????????????
???????????????? 3.???????????????????????????????
? abutment ???????????????? second
molar 4.?????????????????????????????????? ????
maxillary sinus,inferior alveolar nerve
?????????????? 5.????????????????????????? 6.?????
???????????????????????????? transplant
??????????????????????????? OAC
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Use of third molar transplantation for closure of
oroantral communication after tooth extraction
A report of 2 cases
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Patient 1
26 ????????????? maxillary sinus
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Patient 1
26
28
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Patient 2
27 ????????????? maxillary sinus
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Patient 2
27
48
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Result
Patient 1
Patient 2
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Surgical anatomy
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Mandible
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Maxilla
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Classification of mandibular, 3rd
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??????????????????????????distal ??? second molar
??? ramus
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(No Transcript)
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??????????????????????????????????????? second
molar
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(No Transcript)
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??????????????????????????????????????????????????
?????????second molar
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(No Transcript)
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??????? state of eruption
1.Eruption 2.Partial eruption 3.Unerupted
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Classification of maxillary,3rd
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??????????????????????????????? second molar
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??????????????????????????????????????????????????
????????? second molar
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(No Transcript)
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Surgical technique

• - ??????? flap
• ????????????
• ????????????????????????????
• ?????????????????
• ??????????

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??????? flap
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??????? flap ??????????
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??????? flap ????????
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???????????? ??????????????????????????
??
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Mesioangular
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Mesioangular
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Distoangular
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Horizontal
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Vertical
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Maxillary,3rd
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?????????????????

• ??? dental sac ???? granulation tissue ?????????
• ???????????????????????????????
• ???????????????????????????????????
• ?????????????? gauze ????????????????????????????
  ???????????

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Suturing
?????????????????
???????????????????
????????????? IDP

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Complication of operation
1.??????????? 2.?????? 3.?????????????? second
molar 4.???????????????? 5.Maxillary tuberosity
??? 6.???????????????
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Complication of operation
?????????????? inferior alveolar nerve ???
lingual nerve
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Complication of operation
?????????? maxillary sinus ???????? OAC
(oroantral communication)
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Buccal flap
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Repair of oroantral communication in third molar
region by palatal rotation flap
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Result
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Complication of post-operation
1.???????????
2.?????????? 3.?????????????
4.Dry socket (alveolar osteitis ) 5.Pyogenic
granuloma 6.Trismus
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Special thanks
?.??. ????????? ?????