Malocclusion can occur in three planes of space.There are various methods available to gain space. The contemporary treatment modality to gain space for correction of malocclusion is extraction and non-extraction.The current trend in orthodontics again aims for non extraction treatment approach wherever feasible. The fourth envelop of discrepancy i.e. TADs has changed the scenario of gaining space. Now methods for gaining space could be relooked from different angles.

Dr Ambuj Chandana is a budding orthodontics in Haryana and Delhi Region. Currently he is working as a senior lecturer in D.J College of Dental Sciences And Research, Modinagar He is also involved in various projects for the betterment of oral health. Dr Reena R Kumar Principal & Dean at DJ College of Dental Sciences & Research, Modinagar.