Most common cause of maxillary sinus infection of odontogenic origin-
সঠিক উত্তর
সঠিক উত্তর: Anaerobic
সঠিক উত্তর
সঠিক উত্তর: Anaerobic
ভুল বা সঠিক হলে সাথে সাথেই ব্যাখ্যা সহ উত্তর দেখতে পারবেন।
Ideal age of interceptive orthodontics is -
Interceptive orthodontics aims to intercept and correct a developing malocclusion at an early stage, before it becomes fully established. This window corresponds to the mixed dentition period (roughly 6–12 years), when both primary and permanent teeth are present. During this period, problems such as crossbites, crowding, habits (thumb sucking), and arch-length discrepancies can be corrected more easily because the jaws are still growing and teeth are still erupting, making treatment simpler and more effective than after the permanent dentition is fully established.
Reference: Proffit WR, Fields HW, Sarver DM. Contemporary Orthodontics, 6th ed. Chapter on Early Treatment (Interceptive Orthodontics).
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১০ মার্কের MCQ কুইজএই প্রশ্নের বিশেষজ্ঞ বিশ্লেষণ
Odontogenic maxillary sinusitis arises from the spread of dental infection (periapical or periodontal) into the adjacent maxillary sinus through the thin bony floor separating the posterior maxillary tooth roots from the sinus. Because the source is an odontogenic infection, the causative organisms mirror those of typical dental infections — predominantly anaerobic bacteria (often mixed with facultative anaerobes) — distinguishing it microbiologically from rhinogenic sinusitis, which is more often associated with aerobic/viral upper respiratory pathogens.
Reference: Peterson's Principles of Oral and Maxillofacial Surgery, 3rd ed. – Odontogenic Sinusitis.
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