Assessment of nasal respiration and three-dimensional airway volume changes in orthognathic surgery patients.

Objectives: The aim of this study was to evaluate the effect of maxillary movements in orthognathic surgery on nasal airway volume change and its correlation with airflow and resistance.

Materials And Methods: This study included 25 patients (8 male, 17 female) with Class II (6 patients) or Class III (19 patients) malocclusion. All patients underwent Le Fort I and bilateral sagittal split ramus osteotomy.

Change in taste sensation after orthognathic surgery.

Objective: The objective of this study was to evaluate the effect of orthognathic surgery on taste sensation.

Materials And Methods: Thirty-five patients scheduled to undergo Le Fort I osteotomy (LFIO), sagittal split ramus osteotomy (SSRO), and bimaxillary surgery (BMS) were evaluated by administering localized and whole-mouth taste tests preoperatively and postoperatively at months 1, 3, and 6. The patients were asked to identify the quality of four basic tastes applied to six locations on the palate and tongue and to rate the taste intensities they perceived.

The Influence of the Hourglass Form of the Neck on Perceptions of Frontal Esthetics.

The purpose of this investigation was to evaluate the effect of the neck concavity angle (NCA) on different occupational groups' perceptions of frontal esthetics. An online survey was developed using Google Forms and sent to the observers through WhatsApp. Male and female frontal silhouettes were created, and NCAs that comprise the hourglass form of the neck were altered in 5 degrees increments from 120 degrees to 170 degrees.

Does mandibular osteotomy affect the infraorbital nerve? a prospective study.

Objectives: The aim of this study was to evaluate the sensory function of the infraorbital nerve after orthognathic surgery (OS).

Materials And Methods: Patients who underwent Le Fort I osteotomy with or without BSSO for dentofacial deformity treatment were studied. Two groups were created according to whether BSSO was performed.

The Assessment of External Nasal Valve Efficiency After Le Fort I Surgery.

Background: The present study investigated how external nasal valve function is affected after Le Fort I osteotomy using external nasal valve efficiency (ENVE) index.

Materials And Methods: Twenty-one patients who underwent Le Fort I osteotomy with or without mandibular osteotomy were included in the retrospective study. Preoperative and postoperative standardized videos of basal view of the nose during breathing were recorded, and 2 screenshots were taken, 1 in the resting position and the other after deep inspiration.

Bilateral sagittal split ramus osteotomy using a conventional osteotome-hammer and a magnetic mallet device: an in vitro comparison.

Objective: The conventional chisel osteotome technique (CCOT) and the magnetic mallet osteotome technique (MMOT) with a newly manufactured custom osteotome tip for the magnetic mallet device (MMD) were compared to determine whether magneto-dynamic osteotomies are as reliable for orthognathic surgery as the conventional method.

Materials And Methods: A custom osteotome tip compatible with a magnetic mallet device was manufactured. Thirty-two fresh 1-year-old sheep hemi-mandibles were chosen for osteotomy procedures to achieve the most human-like results.

Safe Limits of Lateral Nasal Wall Osteotomy at Le Fort I Surgery.

Introduction: The aim of this study was to define the difference between lateral nasal wall anatomy and variations as linear and angular in patients with class II and class III dentofacial deformities and to determine a surgical margin for safe entry by establishing an ideal osteotomy line for lateral nasal wall osteotomy during Le Fort I surgery.

Materials And Methods: Eighty-five patients with dentofacial deformities, who were admitted to Medipol Mega University Hospital between September 2018 and February 2021, and 170 regions, including the right and left, were evaluated. In the axial image taken from coronal sections 5 mm above the deepest point of the nasal floor, lateral nasal wall angulations and linear and angular distances to the descending palatine canal were measured.

Analysis of Inferior Nasal Morphology and Nostrils following Le Fort I Osteotomy.

Objective: This study aimed to investigate the soft tissue parameters related to inferior nasal morphology and nostril shape and investigate the change at nostril types according to the Modified Topinard System following maxillary surgery.

Materials And Methods: Thirty-five patients who underwent Le Fort I osteotomy with or without mandibular osteotomy were included in this retrospective study. Presurgery (T1) and postsurgery (T2) measurements which were the angle between the longitudinal axis of left and right nostril, nostril length, nostril width, alar width, alar base width, columella length, and columella width, were measured on computed tomography images.

Effect of Orthognathic Surgery on Movement of the Cheilion.

The cheilion (Ch), corner of the mouth, is the soft-tissue landmark where the upper and lower lips intersect. Orthognathic surgery can modify Ch position, which can affect facial esthetics. The aims were to evaluate Ch movements resulting from Le Fort I maxillary advancement with maxillary impaction or downgrafting, and with mandibular advancement or setback, and to investigate relationships between surgical movements and Ch movements.

The Effect of Orthognathic Surgery on the Hourglass Appearance of the Neck.

In frontal view, the transition from the upper aspect of the neck to the inferior border of the mandible has a subtle hourglass appearance. The aim of this study was to evaluate the effect of the orthognathic surgery on the hourglass appearance of the neck in patients with Class II dentofacial deformity. Twenty-six patients with Class II dentofacial deformity who underwent bilateral sagittal split osteotomy alone or in combination with Le Fort I osteotomy and/or genioplasty were included in this study.

Evaluation of parameters related with upper lip aesthetics and dynamic smile following Le Fort I osteotomy.

Objective: The present study aimed to investigate how upper lip aesthetic and dynamic smile parameters are changed following a Le Fort I osteotomy.

Methods: Twenty-seven patients who underwent Le Fort I osteotomy with or without mandibular osteotomy were included in this retrospective study. Upper lip aesthetic parameters which were Cupid's bow angle, lip angle, lip length, lip width, philtrum width and lip corners were evaluated on pre and postoperative rest photos using Image J software.

Analysis of Gull in Flight Appearance and Related Parameters Following Le Fort I Osteotomy.

The present study aimed to investigate how "Gull in Flight" appearance and alar-columellar relationship change following maxillary surgery. Thirty-three patients who underwent Le Fort I osteotomy with or without mandibular osteotomy were included in this retrospective study. Measurements which were angle of columella triangle, alar-rim angle, columella lobular angle, and distance of points forming "Gull in Flight" appearance were evaluated on pre and postoperative frontal and lateral photos of patients.

Comparison of scleral show alterations following Le Fort I osteotomy with either maxillary impaction or lengthening.

This study aimed at evaluating changes in scleral show following Le Fort I osteotomy with either impaction or lengthening of the mid face. Patients who underwent Le Fort I osteotomy were included. The patients were divided according to the direction of the movement: group 1 underwent maxillary advancement and impaction, while group 2 underwent maxillary advancement and lengthening.

Radiographic assessment of the response of teeth following trauma during screw placement for maxillo-mandibular fixation.

Background/aim: Maxillo-mandibular fixation (MMF) screws have gained popularity in recent years for inter-maxillary fixation. MMF screw application involves the risk of dental injury. However, knowledge about the healing responses after root damage in humans is limited, thereby warranting the need to classify the radiographic assessment of healing to enable better prediction of the healing response and effective management of the potential complications.

The efficiency of propranolol on occurrence and development of 4-nitroquinoline 1-oxide-induced squamous cell carcinoma of the tongue in rats.

Aims: The aim of this study to investigate the efficiency of propranolol on occurrence and development of 4-nitroquinoline 1-oxide (4NQO)-induced squamous cell carcinogenesis of the tongue in rats.

Subjects And Methods: The sample was composed of 27 male Sprague Dawley rats that received 50 ppm 4NQO for 20 weeks in drinking water. Group 1 ( = 9) was treated with 50 mg/kg/day propranolol for 20 weeks, Group 2 ( = 9), after carcinogenesis inducement for 20 weeks, received propranolol (50 mg/kg/day) for 2 weeks and Group 3 ( = 9) received no treatment.

Effect of Horizontal Osteotomy Level on Complication Rates and Neurosensory Deficits After Sagittal Split Ramus Osteotomy.

Unlabelled: Horizontal osteotomy is one of the most critical step at sagittal split ramus osteotomy (SSRO) and determination of the ideal height of this horizontal osteotomy is essential to avoid nerve and vessel injury.

Purpose: The aim of this study was to evaluate the level of the medial horizontal ramus cut as a risk factor for unfavorable outcomes in the SSRO.

Materials And Methods: Sixty-four patients with dentofacial deformity who applied to Oral & Maxillofacial Surgery Department between August 2018 and August 2019 and undergone orthognathic surgery were evaluated.

Changes of Stress Distributions Around Pterygomaxillary Junction With Different Osteotome Angulations.

The aim of this study was to investigate how the alteration of the angulation of osteotome at pterygomaxillary junction affects lateral pterygoid plate, maxillary tuberosity, palatal surface of maxilla, palatine bone and body of sphenoid bone. Following reconstruction of 3D modelling of maxilla, Osteotomes' tip was angulated 45 and 90 to sagittal plane to simulate pterygomaxillary osteotomy. Finite element analyses (FEA) was performed and Von Misses stress distributions were analyzed for two different angulations.

Comparison of Success Rate of Dental Implants Placed in Autogenous Bone Graft Regenerated Areas and Pristine Bone.

Autogenous bone grafting still has been considered as the "gold standard" and wildly used in the case of alveolar bone reconstruction. The aim of the present study is to evaluate the success rate of implants placed in autogenous block augmented ridges and implants placed in pristine bone (PB). This study included 113 patients.

Surgical Protocol for a Safe Lateral Nasal Wall Osteotomy.

Purpose: The purpose of this study was to define the anatomy and anatomic variations of the lateral nasal wall area to identify safe access points, determine the optimum osteotomy line for Le Fort I osteotomies, and define a surgical protocol.

Materials And Methods: The angulations and widths of 160 lateral nasal walls and the distances of the greater palatine canal were measured on axial images from coronal sections 5 mm over the deepest point of the nasal base.

Results: The average angle between the anterior lateral nasal wall and the medial maxillary sinus wall was 160 degrees in females and 165.

Orthognathic Surgery Treatment Need in a Turkish Adult Population: A Retrospective Study.

Limited information exists on orthognathic procedures and respective dentofacial deformities in Turkey. This retrospective study assessed the orthognathic surgery procedures in two universities, using the Index of Orthognathic Functional Treatment Need (IOFTN), and compared the IOFTN grades according to gender as well as sagittal and vertical skeletal relationships. Records of 200 consecutive patients (120 females, 80 males, mean age = 23.

Sagittal skeletal correction using symphyseal miniplate anchorage systems : Success rates and complications.

Objectives: Aim of this study is to evaluate success rates and complications related with symphyseal miniplate anchorage systems used for treatment of Class 2 and Class 3 deformities.

Methods: A total of 58 miniplates applied to 29 growing patients were evaluated. The first group comprised 24 symphyseal miniplates applied to 12 patients and Forsus Fatigue Resistant Devices were attached to the head of the miniplates for mandibular advancement.

Comparison of Tunnel and Crestal Incision Techniques in Reconstruction of Localized Alveolar Defects.

Purpose: The aim of this study was to compare the complication rates of recipient sites prepared using two incision techniques: crestal and tunnel.

Materials And Methods: In this prospective study, patients underwent augmentation procedures (68 patients; 75 sites) by the same surgeon that were performed consecutively using the crestal incision technique (27 horizontal, 10 vertical; crestal group) or the tunnel incision technique (27 horizontal, 11 vertical; tunnel group). Autogenous bone block grafts were harvested with a piezoelectric surgical device, and the grafts were fixed at the recipient sites by two titanium screws in both groups.

Lactobacillus rhamnosus could inhibit Porphyromonas gingivalis derived CXCL8 attenuation.

Unlabelled: An increasing body of evidence suggests that the use of probiotic bacteria is a promising intervention approach for the treatment of inflammatory diseases with a polymicrobial etiology. P. gingivalis has been noted to have a different way of interacting with the innate immune response of the host compared to other pathogenic bacteria, which is a recognized feature that inhibits CXCL8 expression.