Prostho vs Ortho — Key differences for NEET MDS
Most accurate = Addition silicone PVS. Alginate = irreversible hydrocolloid. Agar = reversible hydrocolloid. Elastomeric ranking: Polysulfide least accurate. Condensation silicone releases alcohol. Polyether stiffest hydrophilic. Addition silicone most accurate. ZOE = mucostatic impression. Working time affected by temperature.
📖 Read full notes →Class I = normal molar relationship crowding anterior. Class II Division 1 = proclined upper incisors overjet increased. Class II Division 2 = retroclined upper incisors deep bite. Class III = mesial lower molar anterior crossbite prognathism. Key is UPPER FIRST MOLAR to LOWER FIRST MOLAR relationship. Dewey-Anderson modification of Class I.
📖 Read full notes →NEET MDS frequently tests the ability to differentiate between related topics. Understanding the key differences between Impression Materials Properties and Angles Classification in Prostho vs Ortho is crucial for scoring well. Questions may test diagnostic features, treatment approaches, or characteristic findings.