Mental nerve block It is the terminal branch of the I A N. Comes out of mental foramen at or near the mandibular premolars. Area suppiled: sensory innervations to the buccal soft tissues lying anterior to the foramen. Soft tissues of the lower lip & the chin. Indication: 1)
Soft tissues biopsy
2)
Suturing of soft tiissues
Contraindications:actue inflammation at site of injection. Advantages:1)high success rate 2)easy technically. 3)atraumatic. Disadvantage: hematoma Chances of positive aspiration:5.7% Alternatives:
Technique: 25-27gauge niddle Area of insertion :mucobuccal fold at or just anterior to the mental foramen Traget area :mentak nerve as it exist from foramen Land mark : mandibular premolars & mucobuccal fold. Orientation of the bevel : towards the bon INCISIVE NERVE BLOCK Incisive nerve: Terminal branch of the I. A .N. Originates as a direct continuation of the i.a .nat the mental foramen& continues an Area suppied: premolars ,canines,incisors,there buccal soft tissue and bone.
It provide sensory innervation to those teeth located anterior to the mental foramen. block: 1)dental procedures requiring pulpal anesthesia on the mandibular teeth anterior to mental foramen.
2)while treating premolar to premolar Contra indication: acute inflammation,
Area anesthetized: Muccal mucosa anterior to the mental foramen. Lower lip &skin of the chin. Pulpal nerve fibers of premolars , canines ,&incisors. Advantage: 1)provides pulpal and hard tissue anesthesia with out lingual anesthesia. 2)used in case of bilateral I.A.N 3)high succes rate
Disadvantage: Dose not provide lingual anasthesia Partial anasthesia may develop at the mid line because of nervefibers mayover lap with opposite side
Positive aspiration: 5.7% Alternatives:1) local infitration ofbuccal tissues&pulpal anesthesia of central& lateral incisors Inferior alveolar nerve block . Gow-gates mandibular nerve block. Vazirani-akinosis mandibular nerve block. Periodontal ligamental injection.
Technique:1)25-gague needle is recommended but most commonly we use 27 gague needle. 2)area of insertion:mucobuccal at or just anterior to the mental foramen. 3)target area:mental foramen through whichthe mental nerve exit and in which Incisive nerve is located. 4)land mark:mandibular premolars and mucobuccal flod. 5)oriention of the bevel: towards the bone.
Procedure:
The end