套筒冠固位體基牙牙周的微生物學(xué)研究.pdf

1、山西醫(yī)科大學(xué)碩士學(xué)位論文套筒冠固位體基牙牙周的微生物學(xué)研究姓名：武峰申請學(xué)位級別：碩士專業(yè)：口腔修復(fù)學(xué)指導(dǎo)教師：張并生楊圣輝20040524MicrobiologicalStudyonAbutmentPeriodontiumoftheTelescopeCrownRetainerAbstract0bjectiveTostudytheinfluenceoftelescopecro、^／nretainertotheabutmentperiod

2、ontiumMethods18abutments(secondpremolar)oftelescopecrownrestoratives(firstmolarmissing，usesecondpremolarandsecondmolarasabutments)wereevaluatedastotheirPlaqueIndex(PlI)，GingivalIndex(G0，ProbingDepth(PD)，SulcusBleedingInd

3、ex(SBI)andbonelossSubgingivalplaquesamplesweretakenandculturemethodwasusedfordetectionofBacillusmegatherium，Enucleamm，StreptococciActinomycesUsethecontralateralsamelxtmeteethinthesanlearchaseontralgroupTheother30abutment

4、sofporcelain—fiIsedto—metalfixedbridgealsousedascontratgroupTheyallwereinvestigatedfourtimes，afterrestorativeimmediately1monthlater3monthlaterand6monthlaterResultsFromtheabutmentperiodontiumoftelescopecrown，allfourperiod

5、oftime，GI，PII，SBI，PDandmicrobialresultsshowednosignificantdifference、viththecontralteethFromporcelain—fussedto—metalfixedbridge，atfourperiodoftime，SBl，PD，thequantityofStreptococci，Actinomycesindicatednosignificantdiffere

6、ncewiththecontralteethAfterrestoratived3momh，PII，G1，thequantityofBacillusmegatheriumandEnucleatumshowedsignificantdifference(Po05)withthecontralteeth6roonthlatertheupwardsindexshowedextremedifferencewiththecontra]teethCo

7、nclusionThetelescopecrownretainershavelittleinfluencetotheperiodontiumoftheabutmentsTheporcelain—fussedtometalfixedbridgechangetheperiodontalenvironmentoftheabutmentsanddestroytheperiodotiumoftheabutmentsKeywordstelescop