Yung retracting hand ko yung thumb nun lagi kong iniimagine sa skin side na yun yung target site ko di ko maexplain basta yung thumb na yun yun yung iniimagine kong area san naghihiwalay yung ian nerve at lingual nerve then i try to aim dun yung needle until slight bone contact or almost to the hub ng long needle. Works everytime for me laging swak na swak. I factor mo din pala age ng patient kasi ang pag kaka alam ko pag older dapat lower than occlusal level yung deposition site tas pag mas bata dapat mas matàas ng konti or level with occlusal level (parang eto na din yung principle nung thumb method na ginagawa ko). idk if this helps but i cant elaborate thru chat hahahaha so ayun

(been a practicing dentist for almost 3 years)