The MULTI-P® is a pre-fixed appliance used for patients between the ages of 9 to 13 years old. It offers eruption guides for the incisors, cuspids, and bicuspids. Options for a “low volume” or “high volume” are available. The “low volume” appliance is indicated for mesofacial or brachyfacial skeletal patterns, while the “high volume” is indicated for dolichofacial skeletal patterns. It’s now available in two size : Short (without 7) or Long (with 7).