Impact of clear aligners on gingivitis incidence and prevention strategies in adolescents and adults: a prospective observational study.

Objective: This study aims to analyze the differences in gingivitis incidence among adolescents and adults using clear aligners for orthodontic correction and to evaluate the effectiveness of prevention strategies on orthodontic outcomes.

Methods: This observational study included 120 patients undergoing clear aligner orthodontic treatment from June 2018 to September 2023. Participants were divided into an adolescent group (66 cases) and an adult group (54 cases), each further split into a study group and a control group.

Orthodontic camouflage treatment of a hyperdivergent adolescent patient with anterior open bite and TMD: a case report.

Background: In orthodontics, anterior open bite is a common malocclusion that recurs frequently. Because the causes of anterior open bite are so varied, medical professionals must create customized treatment programs for each patient based on their unique etiology. Through the lowering of the posterior teeth, closure of the anterior teeth gap, and cooperation with intermaxillary traction, the treatment plan outlined in this case study sought to achieve a stable occlusion.

Effect of phosphate group on remineralization of early enamel caries regulated by amelogenin peptide.

Objective: To show the effect of the phosphate group on the remineralization process of early enamel caries mediated by amelogenin peptide.

Methods: Freshly extracted, completed, and crack-free bovine teeth were used to create artificial early enamel caries, which were randomly divided into four groups: Group A: fluorination remineralized solution treatment group; Group B: pure remineralized solution treatment group. Group C: 100 g/ml recombinant Amelogenin peptide remineralized solution treatment group (with single phosphate group on N-terminus); Group D: 100 g/ml non-phosphorylated recombinant Amelogenin peptide remineralized solution treatment group (without single phosphate group on N-terminus).

Myeloid-derived suppressor cells in head and neck squamous cell carcinoma.

Myeloid-derived suppressor cells (MDSCs), which originated from hematopoietic stem cells, are heterogeneous population of cells that have different differentiation patterns and widely presented in tumor microenvironment. For tumor research, myeloid suppressor cells have received extensive attention since their discovery due to their specific immunosuppressive properties, and the mechanisms of immunosuppression and therapeutic approaches for MDSCs have been investigated in a variety of different types of malignancies. To improve the efficacy of treatment for head and neck squamous cell carcinoma (HNSCC), a disease with a high occurrence, immunotherapy has gradually emerged in after traditional surgery and subsequent radiotherapy and chemotherapy, and has made some progress.

[Evaluation of the symmetry in nasolabial area of unilateral complete cleft lip with the method of rotation descent step by step].

Purpose: To evaluate the symmetry and stability of nasolabial area of unilateral complete cleft lip (UCCL) after primary repair with the method of rotation descent step by step.

Methods: Thirty patients with UCCL who were operated on were photographed before, 1 week after and 1 year after surgery, the distances from alare point (al), sub alare point (sba), christa phlitri point (cph) and chelion point (ch) to the facial vertical midline (VML) were measured and compared with the opposite side by paired t test. Statistical analysis was performed with SPSS 19.

[3D printing navigation template-guided percutaneous radiofrequency thermocoagulation for V2 trigeminal neuralgia treatment].

Objective: This paper aimed to evaluate the effectiveness of the 3D printing puncture navigation template-guided percutaneous radiofrequency thermocoagulation for V2 trigeminal neuralgia treatment.

Methods: A total of 52 patients with V2 trigeminal neuralgia were treated with radiofrequency thermocoagulation. A total of 32 patients were treated under the guidance of the 3D printing puncture navigation template (guide plate group), while 20 patients underwent puncture via pterygopalatine fossa routinely (routine treatment group).

[Brushing abrasion of the enamel surface after erosion].

Objective A study was conducted to compare the effect of different enamel remineralization periods after erosion on the depth of brushing abrasion. Methods Ten volunteers were selected for a 4-day experiment. A total of 60 enamels were randomly assigned into six groups (A-F) and placed in intraoral palatal devices.

The Use of Venous Coupler Device in Free Tissue Transfers for Oral and Maxillofacial Reconstruction.

Purpose: Microvascular anastomosis remains the most challenging and important technique affecting the success of free tissue transfers. A microvascular anastomotic coupling device is often used. This study is a retrospective review of the use of a venous coupler for head and neck reconstruction during a 2-year period at the Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University (Zhengzhou, China).

[The effect of coaggregation of A.viscosus and P.gingivalis on the adherence of A.viscosus to hydroxyapatite].

Purpose: To examine the effect of coaggregation of A.viscosus and P.gingivalis on the adherence of A.