The most likely precursor to bronchiectasis is bronchopneumonia

Ideal requisites of a barrier membrane include cell occlusivity, tissue compatibility, and space making.

The most suitable anaesthesia for the extraction of a deciduous molar is inferior alveolar nerve block.

Formocresol is a commonly used fixative and disinfectant in endodontic treatment. It is known to produce tissue fixation by causing coagulative necrosis. This is the process by which the proteins within the tissue are coagulated or precipitated, leading to the death of cells due to dehydration and denaturation. The necrotic tissue is then replaced by a fibrous connective tissue, which is essential for the healing process in the periapical region following root canal treatment.

SOLUTION

The possibility that a distal step would become class II is very real, and this not self correcting problem. When the central incisors erupt, these teeth use up essentially all of the excess space in the normal primary dentition. With the eruption of the lateral incisors, space becomes tight in both arches.

Normal child will go through a transitory stage of mandibular incisor crowding at age 8 to 9 even if there will eventually be enough room to accommodate all the permanent teeth in good alignment. In other words, a period when the mandibular incisors are slightly crowded is a normal developmental stage.

Continued development of the arches improves the spacing situation, and by the time the canine teeth erupt, space is once again adequate.