An 8-year old child with normal tooth calcification and eruption has primary mandibular second molar extracted. The resulted space should be:
Correct Answer: Maintained until the premolar root is 2/3 developed
Description: Need for Space Maintenance in Different Regions
First primary molar area: Space maintainers should always be placed whenever a primary molar is lost prematurely as a general rule. The potential for space loss when first primary molar is lost, depends on the different stages of eruption of first permanent molar teeth.
Second primary molar area: The potential for space loss is even greater when the second primary molars are lost prematurely because they normally serve as a buttress for permanent molar eruption.
Anterior segment—primary canine area: Early loss of deciduous canine is more common due to erupting lateral incisors rather than caries. Occasionally, roots of deciduous canines are resorbed and tooth will be lost. Early loss of a primary cuspid may result in a closure of space by mesial movement of the posterior teeth or by lingual displacement of the anterior incisors or eruption of the permanent lateral into the space intended for the permanent cuspid.
An 8-year old child with normal tooth calcification and eruption has primary mandibular second molar extracted. The resulted space should be maintained until the premolar root is 2/3 developed.
Reference: Pediatric Dentistry Principles and Practice SECOND EDITION, MS Muthu; pdf no 1001
Category:
Dental
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now