11.Correcting Faulty Restorations 2013
Transcript of 11.Correcting Faulty Restorations 2013
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PARODONTLIS-PROTETIKAI KAPCSOLATOK
I. IATROGEN PLAKK RETENCIS NYEZK
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Overcotouredrestoration makesthe professional and
individual cleaningimpossible
The overcontouredrestorationsprotects only the
plaqueaccumulation
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PLAQUE RETENTIVE FACTORS
ANATOMICAL FACTORS
IATROGENIC FACTORS
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IATROGENIC FACTORS
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?
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THE MAXIMUM ATAINABLE PERICISION OF MARGINAL ADAPTATION
20UNFORTUNATELY MANY TIMES THIS GAP IS 1000-2000
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Lange D.: Attitudes and behaviour with respect to oral hygiene and periodontaltreatment need in selected group in West Germany. n: Frandsen A. Public
health aspects of periodontal disease. Berlin: Quintessence, 1984: 83-97
According to a German survey every margin that shows atleast 0,2 mm overhang or openess associated withgingival inflammation and alveoral bone loss. They foundonly 18.2% clinically and radiographically perfect marginaladaptations.
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Lang P. N., Kiel A. R. , Anderhalden: Clinical and microbiologicaleffects of subgingival restorations with overhangings or clinicallyperfect margins. J. Clini Periodontol 1983; 10: 563-578
PERIOPROSTHODONTICINTERRELATIONS
ETIOLOGIC FACTORS FOR THE DEVELOPMENTOF DENTAL PLAQUE.
Lang P. N., Kiel A. R. , Anderhalden: Clinical and microbiological effects of subgingival restorations withoverhangings or clinically perfect margins. J. Clini Periodontol 1983; 10: 563-578
2 IATROGENIC ETIOLOGIC FACTORSd) Effect of bad restoration quality on periodontalhealth.
Subgingival microbiological samples coming from the overhanging marginscomposed a microflora resembling that of chronic periodontitis.
Increased proportions of Gram-negative anaerobic bacteria, black-pigmentedBacteroides (Porphyromonas and Prevotella species) and an increasedanaerobe : facultative ratio were noted.The overhanging restorations disturb the ecological balance in theperiodontal pocket and allow a group of disease associated organisms.
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Valderhaug J., H.Loe .: Oral hygiene in a group of supervised patients with fixedprosthesis. J. Periodontol. 1977; 48:221- 224
PERIOPROSTHODONTICINTERRELATIONS
ETIOLOGIC FACTORS FOR THE DEVELOPMENTOF DENTAL PLAQUE.
Morman W. et al.: Gingival reaction to well filled subgingival proximal gold inlays. J. Clin.Periodontol. 1:120, 1974.
2 IATROGENIC ETIOLOGIC FACTORSe) The effect of the position of the crown margin tothe periodontium.
Experimental studies have shown that the supragingival margins should bechosen whenever possible during cavity or crown preparation, andfurthermore, that restoration margins already placed subgingivally should be
re-exposed by, for example, surgical lengthening of the clinical crown
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Have the dentis
ever taken anyimpressions?
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THE GINGIVALRECESSION WASTOTALLY COVERD WITHAN OVERCONTOURED
OVERHANGING CROWV
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the class II furcation is totallycovered with the overcontouredover extended restoration
OVERCONTOUREDRESTORATIONWITH OVERHANGS
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OVERCONTOUREDRESTORATION WITHOVERHANGS
THE WHOLE SHANK OF THE DENTALPROBE FITS UNDERNEATH THE
CROWN MARGIN
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TMS KORREKCI
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EVA SET
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EXTRACTIO IMMEDIT KORONA-HDPTLS
PROVISIONALCROWNS
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KORONA KORREKCI AZ ELLL KORONASZL
ELTVOLTSVAL SUBRAGINGIVLISS TTELVEL
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IN MANY COUNTRIESUNFORTUNATELY THE
ONE OF THE MOSTCRITICAL STEPS INTHE PROFESSIONALORAL HYGINE IS THEMARGINAL
CORRECTION
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IN MANY COUNTRIESUNFORTUNATELY THEONE OF THE MOST
CRITICAL STEPS IN THEPROFESSIONAL ORALHYGINE IS THEMARGINALCORRECTION
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BRAND NEW BRIDGE WITH OVERHANGS
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THE SUPRAGINGIVAL
OVERHANGS HASLESS PLAQUERETENTIVE EFFACTSAND THE MARGINAL
GINGIVA CAN BE FREE
OF INFLAMMATION
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KORONA KORREKCI
AZ ELLL KORONASZL KOMPOZIT TMSSELTRTN KORREKCIJVAL
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A PLAKK RETENCIS HDTESTKORREKCIJA
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THE BAD PONTIC DESIGN CAN LEAD TO SEVER
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INFLAMMATION AND ULCERATION ON THEEDENTULOUS RIDGE
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CROWNS AND BRIDGES
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the contour and size of
the crown is primarilydependent on thedentist, the abutmentpreparation and theaccurate impression
taking
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IMMEDIATECROWNS WITH
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CHAMPHERPREPARATIONS
THE QUALITY AND THE MARGINAL
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ADAPTATION OF A PROVISIONALRESTORATION SHOULD BE ALSO PERFECT
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ACCEPTABLE ORGOOD MARGINALADAPTATIONS
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SUPRAGINGIVAL MARGIN WITHMETALLIC COLLAR
10 YEARS FOLLOW-UP
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NO CARIES AFTER10 YEARS
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PERFECT MARGINAL ADAPTATION WITH SUBGINGIVAL MARGINS
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