Educational photographs showcasing the FR-III (Frankel III) functional appliance used in orthodontics for the treatment of skeletal Class III malocclusion. Panel A illustrates the appliance without a repositioning occlusal plate, featuring large multi-colored (green/orange) acrylic vestibular shields and upper labial pads connected by a stainless steel wire framework. Panel B displays a variation containing a repositioning occlusal plate, characterized by pink acrylic components and increased acrylic volume. Panel C is an intraoral photograph demonstrating the clinical application of the appliance. It shows the vestibular shields positioned in the buccal vestibules to stretch the periosteum and the labial pads situated in the maxillary labial vestibule to promote forward maxillary growth while relieving pressure from the upper lip. The wire framework is seen crossing the occlusal plane and extending along the dental arches. This appliance is designed to modify muscle function and bone growth during the deciduous or mixed dentition stages.

A composite of nine clinical photographs illustrating various orthodontic techniques used for early intervention and malocclusion management in pediatric patients. The images are categorized into three rows. The top row features a 'Recurve spring & posterior coverage' appliance for tooth movement, a 'Functional regulator' (Fränkel appliance) with colorful acrylic shields to modify soft tissue pressure, and 'Maxillary Protraction' using a face mask for Class III skeletal correction. The middle row displays an 'Activator' for growth guidance, a 'Twin-block appliance' consisting of upper and lower acrylic blocks to correct mandibular retrognathia, and a 'Maxillary expander' (RPE) with a central screw mechanism for palatal expansion. The bottom row showcases a '2x4 appliance' comprising four anterior brackets and two molar bands for alignment, a 'Molar-distalizing appliance' for space creation, and a clear 'Prefabricated Functional Appliance' (positioner). These images demonstrate diverse orthodontic modalities including removable plates, fixed expanders, functional growth modifiers, and partial fixed appliances, emphasizing the multidisciplinary approach to managing mixed dentition and craniofacial development.

This composite of clinical photographs illustrates a pediatric patient undergoing orthodontic and myofunctional therapy with a Fränkel 2 (FR-2) functional regulator. Image (a) presents an enface view showing significant hyperactivity and dimpling of the mentalis muscle as the patient attempts lip closure over the appliance, suggesting lip incompetence or hypotonic orofacial musculature. Image (b) provides a profile view demonstrating the strain in the perioral and mentalis regions, characteristic of a Class II malocclusion pattern with associated myofunctional imbalance. Image (c) is a high-detail intraoral photograph showcasing the FR-2 appliance in situ. Visible components include the blue acrylic vestibular buccal shields designed to expand the dental arches by removing muscle pressure, and lower labial pads intended to retrain the mentalis muscle. The stainless steel wire framework, including the labial bow across the maxillary incisors, is also visible. The dentition shows a mixed stage with evidence of crowding and an anterior open bite, common in pediatric patients with obstructive sleep apnea (OSA) or mouth-breathing habits.

This composite clinical and experimental image illustrates the design and mechanical testing of CAD/CAM Fränkel function regulator 3 (FR3) orthodontic appliances. Panels (a) through (c) provide close-up superior views of three different 3D-printed palatal connector designs on a plaster model, highlighting variations in cross-sectional dimensions: (a) a slender 4x1 mm connector, (b) a 5x2 mm connector, and (c) a more robust 3x3 mm square-profile connector. Panels (d) and (e) demonstrate the experimental setup for transversal load testing using a universal testing machine. The transparent resin appliances are mounted on a stabilized clear base, while a mechanical indenter with a spherical tip applies a vertical force to the buccal shield to simulate clinical stresses. Panel (d) shows an appliance with integrated metal wire elements, while panel (e) displays a monolithic, metal-free CAD/CAM design. This visual comparison serves to evaluate how digital design modifications affect the structural integrity, stiffness, and maximum load capacity (Fmax) of orthodontic functional regulators.

This composite of clinical photographs illustrates a pediatric patient undergoing orthodontic and myofunctional therapy with a Fränkel 2 (FR-2) functional regulator. Image (a) presents an enface view showing significant hyperactivity and dimpling of the mentalis muscle as the patient attempts lip closure over the appliance, suggesting lip incompetence or hypotonic orofacial musculature. Image (b) provides a profile view demonstrating the strain in the perioral and mentalis regions, characteristic of a Class II malocclusion pattern with associated myofunctional imbalance. Image (c) is a high-detail intraoral photograph showcasing the FR-2 appliance in situ. Visible components include the blue acrylic vestibular buccal shields designed to expand the dental arches by removing muscle pressure, and lower labial pads intended to retrain the mentalis muscle. The stainless steel wire framework, including the labial bow across the maxillary incisors, is also visible. The dentition shows a mixed stage with evidence of crowding and an anterior open bite, common in pediatric patients with obstructive sleep apnea (OSA) or mouth-breathing habits.

A composite of nine clinical photographs illustrating various orthodontic techniques used for early intervention and malocclusion management in pediatric patients. The images are categorized into three rows. The top row features a 'Recurve spring & posterior coverage' appliance for tooth movement, a 'Functional regulator' (Fränkel appliance) with colorful acrylic shields to modify soft tissue pressure, and 'Maxillary Protraction' using a face mask for Class III skeletal correction. The middle row displays an 'Activator' for growth guidance, a 'Twin-block appliance' consisting of upper and lower acrylic blocks to correct mandibular retrognathia, and a 'Maxillary expander' (RPE) with a central screw mechanism for palatal expansion. The bottom row showcases a '2x4 appliance' comprising four anterior brackets and two molar bands for alignment, a 'Molar-distalizing appliance' for space creation, and a clear 'Prefabricated Functional Appliance' (positioner). These images demonstrate diverse orthodontic modalities including removable plates, fixed expanders, functional growth modifiers, and partial fixed appliances, emphasizing the multidisciplinary approach to managing mixed dentition and craniofacial development.

This intraoral clinical photograph demonstrates the orthodontic management of surgically exposed upper central incisors in a 9-year-old patient. The primary focus is a modified functional appliance, likely a Fränkel type III, featuring a complex metal wire framework and acrylic vestibular shields. Key visible components include a heavy horizontal labial wire spanning the maxillary arch with integrated U-shaped loops. Orthodontic elastics are connected from these loops to bonded metal buttons on the partially erupted central incisors to provide vertical traction (extrusion). A second mandibular wire is positioned labial to the lower incisors, anchored posteriorly. The surrounding gingiva shows localized erythema around the traction sites, consistent with mild inflammatory response to surgical exposure and mechanical force. This clinical setup illustrates a specialized application of functional appliances to manage impacted teeth and facilitate soft tissue stretching for improved lip competence in pediatric patients with skeletal discrepancies.

Educational photographs showcasing the FR-III (Frankel III) functional appliance used in orthodontics for the treatment of skeletal Class III malocclusion. Panel A illustrates the appliance without a repositioning occlusal plate, featuring large multi-colored (green/orange) acrylic vestibular shields and upper labial pads connected by a stainless steel wire framework. Panel B displays a variation containing a repositioning occlusal plate, characterized by pink acrylic components and increased acrylic volume. Panel C is an intraoral photograph demonstrating the clinical application of the appliance. It shows the vestibular shields positioned in the buccal vestibules to stretch the periosteum and the labial pads situated in the maxillary labial vestibule to promote forward maxillary growth while relieving pressure from the upper lip. The wire framework is seen crossing the occlusal plane and extending along the dental arches. This appliance is designed to modify muscle function and bone growth during the deciduous or mixed dentition stages.

This composite of clinical photographs illustrates a pediatric patient undergoing orthodontic and myofunctional therapy with a Fränkel 2 (FR-2) functional regulator. Image (a) presents an enface view showing significant hyperactivity and dimpling of the mentalis muscle as the patient attempts lip closure over the appliance, suggesting lip incompetence or hypotonic orofacial musculature. Image (b) provides a profile view demonstrating the strain in the perioral and mentalis regions, characteristic of a Class II malocclusion pattern with associated myofunctional imbalance. Image (c) is a high-detail intraoral photograph showcasing the FR-2 appliance in situ. Visible components include the blue acrylic vestibular buccal shields designed to expand the dental arches by removing muscle pressure, and lower labial pads intended to retrain the mentalis muscle. The stainless steel wire framework, including the labial bow across the maxillary incisors, is also visible. The dentition shows a mixed stage with evidence of crowding and an anterior open bite, common in pediatric patients with obstructive sleep apnea (OSA) or mouth-breathing habits.

This orthodontic comparison image displays two types of Frnkel Function Regulator 3 (FR3) appliances used for the treatment of Class III malocclusions by stimulating maxillary development. Panels (a) and (c) show a CAD/CAM-fabricated FR3 (CAD-FR3), which features a monolithic, 3D-printed resin design. The CAD-FR3 is characterized by a seamless, one-piece circular vestibular shield and lacks any metal wires or connectors, resulting in smooth, harmonized surfaces. Panels (b) and (d) depict a conventional FR3 (Con-FR3), which consists of multiple acrylic components (buccal shields and labial pads) interconnected by a complex framework of stainless steel wires, including a labial arch and palatal connectors. The educational focus is on the structural evolution from traditional multi-component handmade appliances to modern digital monolithic designs, intended to increase mechanical stability and periosteal tension for improved clinical outcomes in dentofacial orthopedics.

This diagnostic visual features a series of Cone Beam Computed Tomography (CBCT) images, including two axial sections (top row) and four coronal/cross-sectional views (middle and bottom rows) of the mandible. The images demonstrate significant periosteal reaction and new bone formation. White arrows point to horizontal bone deposition along the vestibular (buccal) cortical surface of the mandible, resulting in localized thickening and an irregular contour. Red markers highlight a radiolucent area in the periapical region of a mandibular tooth, suggesting an odontogenic infection. The cross-sections clearly reveal a 'laminated' or 'onion-skin' appearance of the cortical bone, characteristic of Garr's osteomyelitis (periostitis ossificans). The images illustrate the clinical progression of inflammatory bone response to chronic apical periodontitis, showing the formation of reactive new bone beyond the original cortical boundaries. This material is suitable for advanced dental or radiologic education focusing on maxillofacial pathology and diagnostic imaging of inflammatory jaw lesions.

This clinical photograph captures an intraoperative view of an oral and maxillofacial surgical procedure. The focus is on the delivery and mobilization of the buccal fat pad (BFP) into the oral cavity. Multiple stainless steel surgical retractors are positioned to maintain visibility within the posterior maxillary vestibular sulcus. A surgical forceps is used to gently grasp and pull a lobulated, yellowish-orange mass of adipose tissue—the buccal fat pad—from its anatomical space. The surgical field includes the upper dentition and an incision in the gingival mucosa, showing expected surgical hemorrhage. This technique is typically employed for the reconstruction of intraoral defects, such as those resulting from bone sequestrectomy in cases of Medication-Related Osteonecrosis of the Jaw (MRONJ/BRONJ) or oroantral communications. The image demonstrates the pedunculated nature of the fat pad as it is being prepared for rotation and transfer to cover a nearby maxillary defect.

This clinical photograph demonstrates an intraoral injection technique aimed at the mental foramen. A clear plastic lip retractor is utilized to pull the lower lip and buccal mucosa away from the mandibular gingiva, providing clear visualization of the surgical site. A dental syringe with a long needle is seen entering the vestibular mucosa at an approximate 45-60 degree angle to the mandible. The needle is positioned toward the roots of the premolars where the mental nerve exits the foramen. Visible anatomical structures include the lower teeth, erythematous gingival margins, and the dorsal surface of the tongue. This specific procedure is documented as a targeted delivery of local anesthetic or Botulinum toxin type A (BTX-A) for the management of trigeminal neuralgia or anesthesia dolorosa. The image highlights the precise needle placement necessary to contact the mandibular bone near the nerve exit point for optimal therapeutic effect.