Mahony / Fullface Analysis
Welcome back to our clinical cephalometric series at ceph.dentalorb.com. In our previous post, we looked at the dental-skeletal ratios of Bondi Analysis. Today, we are focusing on a modern system that prioritizes soft-tissue drape, facial balance, and treatment mechanics that work with the patient's natural profile: Mahony / Fullface Analysis.
Developed by Dr. Derek Mahony, a world-renowned orthodontist, this analysis brings soft-tissue facial aesthetics to the forefront of diagnostic planning. Rather than looking exclusively at hard tissue angles, the Fullface method evaluates how the teeth and jaws support the lips, nose, and chin, helping you design highly individualized treatment mechanics.
Part 8: Understanding the Mahony Fullface Philosophy
The core concept behind Mahony's analysis is that a stable, beautiful orthodontic outcome depends on the soft-tissue profile. Moving teeth to look perfect on a bone template is counterproductive if it collapses the upper lip or flattens the profile.
To prevent this, the Mahony Fullface framework links skeletal positions directly to facial aesthetics. It cross-checks soft-tissue vertical proportions against hard-tissue values, giving clinicians a highly sensitive guide to determine whether non-extraction, extraction, or orthognathic surgical options will yield the most stable and balanced look.
📐 Core Parameters & Clinical Norms
When you map your cephalogram using the Dental Orb engine, the software instantly calculates your patient's metrics across these integrated structural categories:
I. Sagittal Balance & Core Skeletal Angles
- SNA & SNB Angles [Norms: 82° / 80°]: Tracks the anteroposterior position of the upper and lower jaws relative to the stable Sella-Nasion cranial reference plane.
- ANB Differential [Norm: 2°]: Revels the underlying skeletal jaw relationship. Angles above 4° represent Class II patterns, while angles below 0° point to a Class III jaw architecture.
II. Vertical Facial Proportions & Height
- Lower Anterior Facial Height (ANS-Me) [Norm: Individualized]: Evaluates the vertical proportion of the lower face. Dr. Mahony stresses matching this lower facial space to the middle facial third for optimal aesthetics.
- Mandibular Plane Steepness (S-N to Go-Me) [Norm: 32°]: Tracks the growth direction of the mandible. High vertical angles highlight hyperdivergent, long-face patterns, while flat planes point to hypodivergent growth.
III. Soft Tissue Profile & Lip Support
- Nasolabial Angle [Norm: 102° (±8°)]: The critical angle between the base of the nose and the upper lip contour. A sharp, acute angle suggests a protruding maxilla or flared front teeth, while an open, obtuse angle reveals a flat upper lip requiring profile support.
- Soft Tissue E-Line and S-Line Relations: Evaluates how protrusive or retrusive the upper and lower lips appear relative to the nose and chin, guiding space management during alignment.
💻 How to Run Mahony / Fullface Analysis on Ceph.DentalOrb.com
Our web platform calculates these sensitive aesthetic and geometric metrics locally and securely in your web browser:
- Step 1: Upload and Module Setup
Open ceph.dentalorb.com, upload your digital lateral cephalometric X-ray, and choose Mahony / Fullface Analysis from the dropdown menu in the toolbar. - Step 2: Calibrate the Workspace Scale
Because soft-tissue analysis relies on accurate linear millimeter distances, click the 📏 Calibrate button and trace your X-ray's 10mm reference scale marker. - Step 3: Sequential Landmark Mapping
Click Rx Analyze. Look at the top black instruction overlay. The interface will guide you through placing standard cranial points (S, N, Ar, Co), jaw boundaries (A, B, ANS, PNS, Go, Me, Pog), incisor points, and crucial soft tissue markers (Nose tip, Subnasale, Lips, and Soft Chin). - Step 4: Analyze Your Fullface Report
Once your final soft-tissue coordinate is set, the tool immediately builds your comprehensive profile report. Critical deviations are marked in red to help you plan your extraction or space-closure mechanics. Click Print to create a clean PDF chart for your records.
Help Us Maintain These Advanced Tools: We are fully committed to keeping our advanced, secure, and privacy-respecting dental diagnostic platforms free of subscription costs. If this software streamlines your case planning or educational study, please take a brief moment to view the advertisements displayed on this page. Your support covers our hosting and directly keeps these tools open to practitioners worldwide!
In Part 9 of our guide, we will step into advanced orthognathic surgical planning and structural mapping using the highly specialized **COGS Hard Tissue Analysis**! If you have any clinical questions or feedback, leave them in the comments section below.