Objective: This study aimed to compare the tissue reaction of two repair materials for furcation perforations, nano-filled resin modified glass ionomer (Nano-FRMGI) and mineral trioxide aggregate (MTA), used with or without an artificial floor. Methods: A total of 96 teeth in 6 dogs were used for this study. After access cavities, root canals were prepared and obturated with gutta percha using cold lateral condensation technique. Perforations were then created on the floors of the pulp chambers. The perforations divided into four groups n=24/group that were sealed with MTA alone, MTA with calcium sulphate artificial floor (CSAF), FRMGI alone and Nano-FRMGI with CSAF. All access cavities were filled with composite resin. Two dogs were sacrificed at 1, 3, and 6 month. The experimental tooth along with the surrounding alveolar bone were cut in block sections and histologically evaluated for tissue response. Data were analyzed by Chi-square (P≤0.05). Results: MTA and MTA with CSAF showed more bone and cementum apposition when compared to Nano-FRMGI at 6-month interval. MTA and MTA with CSAF showed less bone resorption, epithelium proliferation and inflammation compared to Nano-FRMGI at 6-month interval. Conclusion: MTA with CSAF or MTA-alone show better outcomes in the repair of pulp chamber floor perforation.

Aims:To investigate the relationship between tooth loss, age, gender, and its correlation with several local habits that affect oral health, especially the khat, and Shammah use. Materials and methods: The current study included 580 participants. They were divided into five age groups15-24, 25-34, 35-44, 45-54, and 55-64-years-old. Clinical and radiographic examinations were done for each subject. Reasons for teeth loss, age, gender, khat chewing, Shammah use, smoking, and use of oral hygiene aids were recorded. The data were statically analyzed using Chi-square tests of the statistical package for social sciences (SPSS) program. The p value < 0.05 were considered statistically significant. Results: Caries was the most cause of tooth loss in the young age groups 15-34 years-old and was significantly more common compared to the older groups (p < 0.001). The periodontal diseases increased with age and progressively became the main cause of tooth loss of 100% in the 55-64 years-old group. Orthodontic reasons for tooth extractions were limited to the young age group 15-24 years old. Third molars were the highest extracted teeth in the maxillary arch, while the first molars were the highest in the mandibular arch. Anterior teeth were the lowest extracted teeth ranging from 9; 1.6% in maxillary teeth and 9-29; 1.6-5% in the mandibular teeth. Conclusion: This study highlights the importance of local habitual use of khat 52.9% and Shammah 8.1% besides smoking in tooth loss. Caries was the main cause of tooth loss in the young age groups, followed by the periodontal disease in the older age. Molars were frequently extracted followed by maxillary first premolars. Clinical significance: Limited number of epidemiological surveys were carried out in Taiz Governorate to investigate the reasons of tooth loss and its relationship with social habits like Khat chewing, Shammah use, smoking, using of Miswake and toothbrush. The results of this study will guide us to develop a preventive program which may minimize tooth loss and its adverse effects.

Oral candidiasis is one of the most common oral disease of human caused by Candida albicans, and can cause superficial infection. Objective: The present study was done to evaluate the prevalence of Candida albicans infection in the oral cavity among dental clinic patients in Taiz city, Yemen. And determining the sensitivity of the isolated Candida albicans to some antifungal drugs and plant extracts. Methods: A total (200) specimens with oral candidiasis have been collected from dental patients by using the oral rinse technique, from October 2021 to January 2022. Diagnosed by dentist of clinics and hospitals, and identified by microbiological procedures. Results: Most of the isolates were Candida albicans representing in 101(50.5%) of total oral sample isolates. The non-Albicans species are the second most common representing in 51(25.5%). The remaining oral sample isolates are of non-yeast growth representing in 48(24%). Fluconazole and Itraconazole have been tested against 20 isolates of C. albicans. All the drugs, examined in vitro, show antifungal sensitivity that shows (80%). Plant extracts of Salvadora persica and Commiphora myrrha have been tested against 20 isolates of C.albicans. Four concentration of alcoholic extracts for investigated plants show antifungal activity in vitro better than aqueous extracts. Conclusions: Candida albicans were the most prevalent isolate from oral cavity of dental patients with oral candidiasis. Plant extracts of Salvadora persica and Commiphora myrrha show antifungal activity in vitro.

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