Preclinical Dentist I nes Lenka RoubaKková Dental caries microbs time Dental Caries Infectious microbiological disease of the teeth that results in localized dissolution and destruction of aHEi! A gelatinous mass of bacteria adhering to the tooth surface. No shedding Fermentable (mono-, di- tri- sac] Sucrose, glucose, lactose w iw^ ■ >*/• 9h^@S Dernineralization Plaque formation ľK Icrobial source mmm 3 uffer capacity Predictable Pits and fissures Proximal surfaces Cervical area No self dirty places Predictable clean places Cusps Proximal ridge, crista transversa, crista obliqua buccal or oral surface upon the maximal onvexitv Self cleaning Caries - depth Surface caries (caries superficialis) Middle caries (caries media) Caries close to pulp (caries pulpae proxima) Caries penetrating into the pulp (caries ad pulpám penetrans) Caries - Topography Acute Chrono Stopped Primary caries Secondary caries Recurrent caries 1 Á inn Wing Diagnosis ibre Optic Trans Illumination Infra Red Las Fluorescence On molecular basis - Dental hygiene - Fluorides, Calcium, Phosphates - Diet antimicrobial agents Dental Caři Cavitated lesion: Preparation Filling Drill anf fill Preparation ■W Instrumental treatment Remove caries T ^ve the rest of t^ ^f to be restored ■ .■ ssues - to be resistent against the bite forces - to be prevented against the recurrent caries (Black 1914) Classifivation of cavities according to Blac Fissures and pits Proximal surfaces of molars and premolars Class III. Proximal surfaces of incisors and canines without loss of the incisal edge Proximal surfaces of incisors and canines with the loss of incisal edge Cervical area Turbine 400.000 rpm Electromotors - maximum 40.000/min Airmotors - maximum 20.000/min Gearing to fast speed Gearing to slow speed Oscillation jĚ ŠS 1 : 1 as far as 40.000 rpm Preparace strojová — pohony 1:4 až 1:5 as far as 160.000 - 200.000 rpm Preparace strojová - 1 •wfc ial^^^^j^BI W^SSBBm Ěf ' ľ**Kj^ ^- £-- i^jf _.■ i., ^j ..> Cí .—. Ľ 1 * ^§Jsüätaa SkOjtCiÄ^ ■ÄriäJ^JiÄ.iUhW p 2,7:1 7,4:1 Preparace strojová - ü Ep.umiiinLnriiFiM JjJ^JUlUJUUJJJJJUliltJ iiiiLjjjJiJiJinmiJiitl Elllillliii,.l.illl[ fp.i.i........ i »íl TZT JĽJ y^JUUl^LLLLLLĽJJĽ XLJ.™lUJJJJjJJt jjjtUHliHNnňlllH 1 ^|! . 1:-......tlUIII! pOüUllÜlililiiW. j^AlLWLLíiUiiií iy! iii:iiil-i :-jlji-il í P ■C------u--------^ ISO 6360 mmmm Filling materials Zinkoxidsulphate cement One component cements based on gypsum and organic lute Zinoxidühosühate cerne^ M Filling materials Mercury Powder — metal alloy: Silver Tin Copper Zinc Chisel — for enamel Chisel for enamel Excavator .-. .■