van Rodriguez Gelfenstein was involved in general dentistry, both in the private and public sectors. Between 2004 and 2015, Ivan Rodriguez Gelfenstein practiced as an orthodontist at a Ciudad Tamanco shopping center clinic.

Occlusion is a branch of dentistry that focuses on the structure of the teeth upon the fusion of the upper jaw (maxilla) and lower jaw (mandible). Instances, when the maxilla and the mandible are not correctly aligned are referred to as malocclusion, and there is a need for you to visit the hospital in such a situation. In other words, malocclusion refers to instances where normal occlusion does not occur in the mouth.

When occlusion happens as ought, the oral cavity can function adequately, as good occlusion reduces the likelihood of individuals developing dental diseases. On the other hand, malocclusion can result in digestion problems, sleep apnea, jaw joint pain, and tooth wear. Asides from dental issues, malocclusion might distort the face unevenly or result in unbalanced facial features.