The study samples included 12 anatomical specimens taken from the fixed corpses of various gender and age. Pterygomandibular space topography was assessed by macro - and micropreparation methods. The landmarks for the universal way of mandibular anesthesia were defined associated with low risk of medial pterygoid muscle, lingual nerve, inferior alveolar neurovascular bundle damage. The study results allow increasing the efficiency and safety of anesthesia of the lower jaw teeth.
Topograph 98 Se
Natural Brazilian spodumene crystals have been studied by X-ray topography. The observed samples have shown four types of growth defects: growth bands, channels, dislocations and inclusions which are analyzed in detail. In particular, the origin of the well-known channels is discussed. The morphologies shown by the two varieties of these Brasilian spodumene are directly related to an important process of redissolution after a stage of complete growth. 2ff7e9595c
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