口腔颌面外科学（中山大学）11.口腔颌面部感染2.pptxVIP

Oral and maxillofacial infectionLiang Yu-jie Department of oral and maxillofacial surgeryGuanghua school of stomatology Pericoronitis Definition The Inflammation occurrence around the soft tissue of the tooth coronal when the third molar was impacted or unerupted ■ frequently around mandibular third molar ■ rare around maxillary third molar Etiology■ Anatomy imbalance degenetate of the jaw and tooth not enough room to erupt pocket around the corona bacteria and food to fill in easy to be injuried ■ Compromised defense or the bacterial virulence boost up Clinical presence Acute pericoronitis ◆ pain, swelling, redness ◆ submandibular lymphadenopathy ◆ trismus ◆ a general condition of malaise ◆ moderate elevation of temperatureExamination unerupted tooth covered by inflammatory gingival flapInfection may direct spread or diffuse by lymphatic◆ retromolar area -- subperiosteal abscess -- break through muscle -- subcutaneous abscess -- fistula ◆ mandibular oblique line -- first molar -- subperiosteal abscess -- fistula ◆ backward along medial and lateral of mandibular ramus -- Fascia space infectionDiagnosis Easy to diagnosis◆ It is importance to use a probe to examine the existence of tooth◆ X-ray ◆ Differentiate: inflammation from first and second molar, malignant tumor from retromolar area Treatment acute inflammation: diminish inflammation、ease pain、incision and draining、boost the body defense chronic inflammation: tooth extraction Infection of fascia spaces in oral and maxillofacial region Introduction■ fascia space exist only as potential spaces, but become real spaces when infection invading■ infection origins secondary to dental or adenogenous infection■ differentiated with infection secondary to malignant tumorInfraorbital spaceSuperior: inferior margin of the orbitInferior: alveolar process of maxillaMesial: margin of periform apertureLateral: zygomatic-maxillary sutureInfraorbital spaceInfraorbital spaceClinical features■ s