Journal of oral biology and craniofacial research最新文献

Purpose

Competence building in interpersonal communication (IPC) between undergraduate students and patients requires deep understanding of the factors influencing their interaction. These factors, contextual to our clinical setup were explored from multisource perspectives to understand the perceived barriers in IPC.

Method

Qualitative hermeneutic phenomenological analysis was done for patient's semi-structured interviews (n = 16); interns (n = 15) and faculty (n = 14) unstructured focus group discussions. Three independent authors transcribed the data, derived codes and themes individually, and then collated and reflected on them to draw conclusions. Different collection methods, multisource perspectives, and multilevel analysis provided for triangulation and validation of the study results.

Results

This study's multisource feedback identified seven inter-dependent barriers to interpersonal communication between students and patients. They were time constraints, lack of trust and respect, cultural diversity, loco-regional linguistic differences, lack of empathy, illiteracy, and financial constraints.

Conclusions

The study concluded by identifying the unique set of barriers preventing interpersonal communication in our clinical microsystem. Addressing these contextual factors by preparing training modules and workshops would prepare undergraduate students for patient-centered care and partnership.

The aim of this case report was to present an alternative therapeutic combination involving lip repositioning (LR) in the correction of gummy smile (GS). This treatment is less invasive than orthognathic surgery and is highly acceptable to patients, using a modified technique that combines myotomy with the insertion of polyester threads as a physical barrier against relapse.

Cannabidiol (CBD) found in Cannabis sativa is a non-psychoactive compound which is capable of binding to CB1 and CB2 receptors. CBD has recently gained interest in dentistry although it has not been explored sufficiently yet. The therapeutic effects of CBD include anti-inflammatory, analgesic, antioxidant, biological and osteoinductive properties. The aim of this review is to highlight these effects with respect to various oral conditions and shed light on the current limitations and prospects for the use of CBD in maintaining oral health.

Introduction

Tooth cervical abrasion (CA) is a prevalent non-carious cervical lesion that poses challenges for accurate diagnosis from periapical radiographs due to difficulties in assessing the lesion's extent, associated bone loss, and pulpal involvement. The presence of overlying bone structures on the palatal side when lesions are located on the buccal side, or vice versa, further complicates radiographic interpretation. So it is important to define the lesions in all three dimensions.

Objective

To provide a three-dimensional descriptive classification for cervical abrasion lesions using Cone Beam Computed Tomography (CBCT).

Method

A total of 50 patients with cervical abrasion were selected for the study. From these patients, teeth (n = 10) from each of the four different quadrants were chosen. A CBCT scan with a 6 × 6 cm field of view (FOV) was performed, and the DICOM files of the cervical lesions were transferred to 3-D imaging software. The CBCT images of the cervical abrasion lesions were assessed at the level of the deepest point of the lesion along the long axis of the tooth in both axial and sagittal planes. The height (A), buccolingual dimension (B), circumferential spread (C), and remaining dentine thickness (D) were evaluated and classified using new scoring criteria for each dimension. The reliability and reproducibility of the classification were assessed to ensure its clinical applicability.

Conclusion

CBCT can be utilized to classify tooth cervical abrasion in endodontics, enhancing diagnosis, analysis, and treatment outcomes. This three-dimensional view facilitates easier communication among clinicians, allows for tailored treatment approaches, and opens new avenues for research.

Purpose

This systematic review evaluates the relative effectiveness of low-level laser therapy (LLLT) and microsurgery for neurosensory recovery following sustained iatrogenic injuries to the inferior alveolar nerve (IAN) and lingual nerve (LN) more than 6 months in Oral and Maxillofacial surgery procedures.

Methods

Six articles were included. The mean age of microsurgery studies was 41.5 years and that of LLLT studies was 31.5 with female predominance in all studies. The majority of the included studies have been based on both subjective and objective assessments for neurosensory, two investigating microsurgery and four investigating LLLT following a Six-month post-IAN and LN injury.

Results

Each modality demonstrated positive outcomes in both subjective and objective assessments of neurosensory function. Notably, LLLT exhibited efficacy even when employed beyond a six-month interval following the initial injury. Early intervention is generally recommended, particularly for microsurgical approaches.

Conclusion

LLLT shows exciting promise as a minimally invasive approach for neurosensory rehabilitation even after six months of injury, while microsurgery studies revealed an improvement and the recommendation for early intervention post-nerve injury, the potential of LLLT and optimize its use for neurosensory rehabilitation, additional randomized controlled trials with larger sample sizes, longer follow-up periods, and blinding protocols are necessary.

Purpose

To investigate the effect of compressive force combined with vibration on expression of CC-chemokine ligand 2 (CCL2) and 5 (CCL5) in human periodontal ligament (hPDL) cells.

Methods

Human PDL cells were cultured and assigned into four groups: control (Con), compressive force 2.0 g/cm² for 24 h and 48 h (C), vibration 0.3 g 30 Hz for 20 min every 24 h (V), and compressive force combined with vibration (VC). At 24 h and 48 h, mRNA and protein levels of CCL2 and CCL5 were examined by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and enzyme-linked immunosorbent assay (ELISA), respectively.

Results

At 24 h and 48 h, CCL2 mRNA and protein levels in C and VC were significantly higher than Con. At 24 h, VC showed significantly higher CCL2 mRNA expression than C. However, there was no significant difference between CCL2 protein in C and VC at both time points. At 24 h and 48 h, CCL5 mRNA expression was significantly down-regulated in V and VC, whereas CCL5 protein was undetectable in all groups.

Conclusions

Application of compressive force combined with vibration resulted in the upregulation of CCL2 mRNA and protein levels, whereas CCL5 mRNA expression was down-regulated.

Statement of problem

Soft liners are essential for denture wearers, which aids in the healing of soft tissue injuries caused by rough denture base surfaces. Silicone soft liners, while effective, can accumulate biofilm over time, necessitating enhancement.

Purpose

This in vitro study aimed to assess the efficacy of silicone soft liners incorporating varying concentrations of cerium oxide nanoparticles.

Materials and methods

A stainless-steel die as per ISO standard 10139-2-2018 (35 × 6 mm), Using G*Power 3.0.10 software, 400 samples were prepared with 95 % confidence interval and 80 % power. Samples were divided into five groups: surface morphology (Group A), surface hardness (Group B), wettability (Group C), cytotoxicity (Group D), and antifungal property (Group E). Each group was subdivided based on cerium oxide nanoparticle concentrations. Samples were stored in artificial saliva until evaluation. Surface morphology was examined via scanning electron microscopy (SEM), surface hardness using Shore A Durometer, wettability by drop shape analysis, cytotoxicity via MTT assay, and antifungal properties using crystal violet staining.Data were assessed for normal distribution using Kolmogorov-Smirnov and Shapiro-Wilk tests.

Results

SEM analysis showed optimal nanoparticle dispersion in Group A2(0.25 %) and A3 (0.5 %). Group B2 (0.25 %) exhibited the lowest mean surface hardness, decreasing from day 1 to day 30. Group C3 demonstrated the most hydrophobic surface across days. Group D2 exhibited the least cytotoxicity at all time intervals. Group E4 displayed the highest antifungal activity.

Conclusion

Within study limitations, silicone soft liners modified with 0.25 % and 0.5 % cerium oxide nanoparticles exhibited superior properties in surface hardness and cytotoxicity. Optimal surface morphology and wettability were observed with 0.5 % concentration, while antifungal efficacy peaked at 1 %. These findings suggest clinical potential for treating damaged oral tissues.

Clinical implications

Soft liners modified with 0.25 % and 0.5 % cerium oxide nanoparticles may benefit patients with oral tissue abuse, offering enhanced therapeutic properties.

Aim

This study aimed to develop and validate an instrument, Dental Visiting Behavior Based on Health Belief Model among Adults (DVBHBM), and to assess factors influencing adults' dental visiting behavior based on Health Belief Model.

Materials and methods

This cross-sectional study was conducted among 277 adults in Hyderabad, India. The DVBHBM instrument, based on Health Belief Model, was developed, validated, and distributed among participants. Exploratory factor analysis, reliability analysis, descriptive analysis, independent t-tests, and path analysis were conducted to explore construct validity, internal consistency, attitudes, and relationship among variables.

Results

Participants with discomfort exhibited higher perceived susceptibility (3.70 ± 1.15) compared to those with regular dental visits (2.84 ± 1.26, p < 0.05). Conversely, individuals with regular dental visits demonstrated significantly greater perceived benefits (22.32 ± 2.5) than those experiencing discomfort (19.76 ± 3.36, p = 0.001). Perceived barriers were lower among individuals with regular dental visits (11.01 ± 4.61) compared to those experiencing discomfort (12.71 ± 4.26, p = 0.001). Participants with regular dental visits also perceived the severity of not visiting a dentist (3.87 ± 0.95) more strongly than those experiencing discomfort (2.91 ± 1.03, p = 0.000). Cues to action were more pronounced in individuals with discomfort (3.34 ± 1.06) compared to those with regular dental visits (2.98 ± 1.07, p < 0.05).

Conclusion

Participants exhibiting discomfort in dental visits had significantly higher perceived susceptibility, perceived barriers, cues to action and self-efficacy towards dental visits. However, factors such as age, gender, marital status, income, brushing, flossing and tobacco use did not impact dental visiting behaviour of adults.