“Ugly duckling stage” as the maxillary central incisors erupt, they move labially, and a temporary diastema is often present between them. When the permanent canines erupt, their mesial movement will likely close the diastema if one is present and if it is 2 mm or less.
The normal range for a healthy person not on warfarin is 0.8–1.2, and
for people on warfarin therapy an INR of 2.0–3.0 is usually targeted. If the INR is outside the target range, a high INR indicates a higher risk of bleeding, while a low INR suggests a higher risk of clotting.
Epstein pearls are keratin-filled cysts with stratified squamous epithelium lining. Located on the mid-palatal raphe at the junction of the hard and soft palates.
Bohn’s nodules are keratin cysts derived from remnants of odontogenic epithelium over the dental lamina or may be remnants of minor salivary glands. They occur on the alveolar ridge, more commonly on the maxillary than mandibular.
Contraindications to the use of ZOE include:
l. On dentin or enamel prior to bonding: compromises bonding.
2. As a base or liner for composite resins: eugenol interferes with polymerization.
3. Patients who are allergic to eugenol
4. Direct pulp capping.
Rule of thumb: When two teeth adjacent to each other have Class III lesions, you should prepare the larger one first and fill the smaller one first. Access to the preps and shade matching are easier when you do both at the same appointment.
#dentaldecks
📌 Hygroscopic expansion: when there is moisture during amalgam titration or condensation → reacts with Zn releasing Hydrogen and causing delayed expansion of amalgam after few days + the gas will form bubbles on the surface of Amalgam
Expansion in amalgam restoration:
📌Mercuroscopic expansion: Excess mercury not removed will keep on reacting with the amalgam → weakens the restoration