To examine the prevalence of different types of dental anomalies in children with nonsyndromic cleft lip, unilateral cleft lip-palate, and bilateral cleft lip-palate.
A sample of 90 patients (aged ...4-20 years) affected by isolated cleft lip, unilateral and bilateral cleft lip and palate was examined. Cleft patients were classified into one of three groups according to cleft type: (1) Unilateral Cleft Lip-Palate, (2) Bilateral Cleft Lip-Palate, and (3) Cleft Lip. Intraoral exams, panoramic radiographs and dental casts, were used to analyse the prevalence of the various dental anomalies included in this study.
There were no statistically significant differences between patients with cleft lip, unilateral cleft lip and palate and bilateral cleft lip and palate. The congenital absence of the cleft-side lateral incisor was observed in 40% of the sample, and a total of 30% patients showed supernumerary teeth at the incisors region. Second premolar agenesis was found in 4.4% of patients, whereas in 18.9% of the sample there was an ectopic dental eruption. Lateral or central incisors rotation was noted in 31.1% of the sample, while shape anomaly, lateral incisor microdontia, and enamel hypoplasia were detected respectively in 25.6%, 5.6% and 18.9% of cleft patients.
High prevalence of different dental anomalies in children with cleft lip and unilateral and bilateral cleft lip and palate has been confirmed. This study, in particular, shows the presence of ectopic and rotated teeth in the cleft area.
This review aims to summarise our understanding of the destructive role of acid environment and metalloproteinases in dentin caries progression using a review process.
The acids resulting from ...consumption of sugars by acidogenic and aciduric bacteria can cause demineralisation of the tooth surface, but are not able to cause caries-like lesions. The appearance of such lesions requires the activation of enzymatic proteolysis in an acidic environment for degradation of the dentin organic matrix, leading to cavity formation. Bacterial collagenases have long been considered responsible for organic matrix destruction; host cell-derived matrix metalloproteinases (MMPs) have recently been considered to be involved in the dentinal matrix destruction of carious lesions.
MMPs are initially synthesised as inactive zymogens to be activated in acid environment of dentinal fluid during the carious process, resulting in destruction of the collagenous matrix. The role of acid environment on enamel and dentin demineralisation and the role of salivary and dentinal MMPs in dentin progression of caries has encouraged general dentists to include the monitoring of oral environment not only by control of bacterial oral flora in caries treatment protocol, but mainly by inhibition of dentinal and salivary MMPs through the use of toothpaste and/or mouthwash containing specific active agents.
Introduction. Orofacial clefts are congenital malformations characterized by an incomplete shaping of structures that separate the nasal from the oral cavity and can affect the right, left, or both ...sides. The aim of the present study is to assess, with clinical, radiographical, and histological evaluations, the efficacy of piezoelectric devices compared to traditional rotating instruments in the bone harvesting in patients with history of cleft. Materials and Methods. We have conducted a retrospective analysis on 20 patients with a history of orofacial clefts that were operated on from February 2014 to June 2017. The patients were divided into two groups: Group R in which bone graft was harvested using a burr and Group P in which the bone graft was obtained by a piezoelectric device. After a healing period of 8 months from the grafting procedure, clinical and radiographic evaluations were performed. Results and Discussion. The use of the piezoelectric devices in bone harvesting allows a slight improvement in the final volume. This supports a faster integration into the receiving site. Conclusions. The use of piezoelectric device in patients with history of orofacial cleft that needed bone graft represents a method to be taken into consideration because it has interesting advantages.
N-Cadherin (CDH2) is a calcium-dependent adhesion protein, whose de novo expression, re-expression, up-regulation and down-regulation in human tumors has been demonstrated. The aim of the present ...work was to define the prognostic role of N-Cadherin in a large series of oral squamous cell carcinomas (OSCCs).
A total of 94 selected OSCCs were quantitatively and qualitatively analyzed by immunohistochemistry for N-Cadherin. The association between protein expression and clinico-pathological parameters was assessed by statistical analysis.
In neoplastic tissue, N-Cadherin levels were more evident than in normal peritumoral epithelium (p<0.05). Protein staining was mainly detected in the neoplastic cells, and only focal nuclear positivity was observed. Expression of cytoplasmic N-Cadherin correlated significantly with poor histological differentiation (p<0.05). Furthermore, we have observed significant a statistical trend for stage and a correlation with worst patient outcome, also confirmed by Kaplan-Meier estimates.
Our work has underlined the key-role of N-Cadherin in oral carcinogenesis and in the prognostic stratification of patients.
In this study, resonance and articulation disorders were examined in a group of patients surgically treated for cleft lip and palate, considering family social background, and children's ability of ...self monitoring their speech output while speaking.
Fifty children (32 males and 18 females) mean age 6.5 ± 1.6 years, affected by non-syndromic complete unilateral cleft of the lip and palate underwent the same surgical protocol. The speech level was evaluated using the Accordi's speech assessment protocol that focuses on intelligibility, nasality, nasal air escape, pharyngeal friction, and glottal stop. Pearson product-moment correlation analysis was used to detect significant associations between analysed parameters.
A total of 16% (8 children) of the sample had severe to moderate degree of nasality and nasal air escape, presence of pharyngeal friction and glottal stop, which obviously compromise speech intelligibility. Ten children (10%) showed a barely acceptable phonological outcome: nasality and nasal air escape were mild to moderate, but the intelligibility remained poor. Thirty-two children (64%) had normal speech. Statistical analysis revealed a significant correlation between the severity of nasal resonance and nasal air escape (p ≤ 0.05). No statistical significant correlation was found between the final intelligibility and the patient social background, neither between the final intelligibility nor the age of the patients.
The differences in speech outcome could be explained with a specific, subjective, and inborn ability, different for each child, in self-monitoring their speech output.
Background Adverse drug reactions are noxious and unintended responses to a medicinal product.
Many drugs have the potential to induce adverse reactions in the mouth. The extent of such reactions is ...unknown; however, because a lot of them are asymptomatic, many are believed to go unnoticed. Adverse oral drug reactions are responsible for oral lesions and manifestations that can mime local or systemic disease.
Their pathogenesis, especially of the mucosal reactions, is largely unknown and appears to involve complex interactions between the drug in question, other medications, the patient's underlying disease, genetics and lifestyle factors.
Aim In this study, we have listed the principal signs and symptoms of oral and perioral adverse drug reactions and the responsible drugs. Diagnosis for adverse drug reaction is not easy given also the limited utility of laboratory tests. The association between a drug and an adverse drug reaction is mostly based on the disappearance of the reactions following discontinuance of the offending drug.
Sometimes, it is useful to perform rechallenge tests reintroducing the drug to establish cause and effect.
Conclusions Knowledge of adverse drug‐induced oral effects helps health professionals to better diagnose oral disease, administer drugs and improve patient compliance during drug therapy and may foster a more rational use of drugs.
Studies on milk proteins revealed that a qualitative and quantitative polymorphism may often be found regarding α-lactalbumin (α-LA). In mammals, a similar phenomenon was widely documented in the ...α-globin system as the result of a gene duplication. The presence of several differently expressed α-lactalbumin gene (LALBA) products suggests that the mechanism underlying this phenomenon may involve nonallelic genes. To check this hypothesis, an experiment was set up to investigate the LALBA gene arrangement of a water buffalo exhibiting an α-LA phenotype characterized by a double-band pattern on PAGE isoelectric, focusing analysis of milk protein. In particular, the relative amount of protein inferred from the different intensity of the bands was consistent with a gene duplication. Thus, leukocyte DNA was extracted from a blood sample of the buffalo and amplified with 4 primers (2 RV-IVFW for PCR and 4 FW-IRV for nested PCR). The intergenic segments of the assumed duplicated gene were then amplified with 2 different PCR protocols. First, the segment limited by the third exon in the upstream gene and the second exon in the downstream gene was amplified by simple PCR, which gave aspecific results. Second, this PCR product was subjected to nested PCR, amplifying the segment limited by the fourth exon in the upstream gene and the first exon in the downstream gene, yielding an amplified nucleotide fragment of about 6,200 bp. Blood samples from an additional 15 buffalos were then analyzed in the same manner. The results obtained from the new samples confirmed the presence of an amplified nucleotide fragment of about 6,200 bp in most of them, though they all were characterized by an α-LA monomorphic phenotype. A couple of 6,200-bp fragments obtained were purified, cloned in pGEM-T easy vector system (Promega, Madison, WI) and sequenced. The sequence of the large DNA segments, containing the intergenic portion, was aligned with the LALBA gene (accession number AF194373; http://www.ncbi.nlm.nih.gov/Database/index.html). They both were found to coincide with the portion containing exon 4 and the untranslated region at the 3′ end of the upstream gene and with the portion containing exon 1 and the untranslated region at the 5′ end of the downstream gene. These results confirm the hypothesis that a tandemly repeated copy of the LALBA gene is present in water buffalo.
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