2015年1月5日 · The most prominent developmental groove on posteriors is the central groove, which generally travels mesiodistally and separates the occlusal table buccolingually. Other developmental grooves are marginal grooves, which cross the marginal ridges and serve as a spillway, allowing food to escape during mastication.

2015年1月4日 · The junction that forms the union of these lobes is marked by lines on the tooth called developmental grooves, which can be seen on the tooth after it has erupted. The number of developmental lobes necessary for the formation of a tooth depends on the particular tooth and how many cusps it has.

The radicular groove is a developmental groove which is usually found on the palatal or lateral aspects of the maxillary incisor teeth. It is a linear depression that sometimes reaches the apex . The groove is a rare anomaly with prevalence rate of 2.8–8.5% and generally presents on the maxillary lateral incisors .

A developmental groove (see figure 4-17) is a depression in the crown of a tooth that marks the boundary between separate lobes. They are the junction lines between the inclined walls of a sulcus.

Developmental grooves separate the five cusps, as shown by the red lines on the occlusal surface image below. Mandibular Second Molars – Teeth 37 and 47. The mandibular second molars erupt between 11 and 12 years of age. These teeth erupt distal to the permanent first molars and are nonsuccedaneous.

Palatogingival grooves are developmental malformations quite notorious for precipitating endodontic - periodontal lesions. Owing to their inconspicuous occurrence, funnel-shaped morphology and variable extent on tooth root, they promote adherence of plaque and bacteria to levels significant for the development of pathology.

2015年1月1日 · (1) Fissure—structural effect of enamel formation manifested as developmental lines or grooves on the external surface of a tooth; the area where the centers of calcification coalesce during tooth development (2) Developmental groove—groove or line that indicates the primary anatomic divisions (cusps, lobes) of a crown

2018年8月1日 · Two developmental grooves connect to the central groove inside the mesial and distal marginal ridges. These grooves are the “ mesiobuccal developmental groove ” and the “ distobuccal developmental groove.” The connections of the grooves are located at opposite ends of the central developmental groove, and deeply pointed.

Root grooves are developmental anomalies caused by an infolding of the inner enamel epithelium and Hertwig's epithelial root sheath on the tooth surface. Such morphological features compromise patient self-care, favor accumulation of plaque, calculus, and food debris.

2025年2月28日 · Unravelling the basic workings of tooth development may also pave the way for using tissue engineering to repair teeth and regrow other organs. "The biggest takeaway is that there's an entire world of physical forces out there involved in forming an organism’s tissues and organs," said developmental biologist and co-lead author Ophir Klein, M ...

For our study, we are interested in the long grooves running along the mesiodistal line of the tooth, called central developmental grooves , or just central grooves . Figure 5 shows some...

2022年3月29日 · Therefore, it is important to identify and correct, at an early stage, periodontal and dental alterations resulting from the presence of developmental grooves, especially in young subjects. For sample size calculation, the mean prevalence of radicular grooves (5%) reported by previous studies was used as reference.

2 天之前 · The variation observed in occlusal topography, including the depth and complexity of grooves and fossae, underscores the influence of individual-specific factors in dental development. This further highlights how dental morphology, while generally stable within individuals, can vary considerably between individuals, reflecting both genetic ...

Developmental grooves are fissure between the cusps on the crown of a tooth. Cusp tips are where enamel develops. As the enamel develops and spreads laterally, it touches enamel developing from other cusps. This junction forms a developmental groove. Such grooves appear on the labial, buccal, and lingual surfaces. Previous

2020年6月18日 · To have a firm understanding of dentistry and dental anatomy, it is essential to have a clear understanding of the structure of a human tooth, surfaces of teeth, and basic dental terminologies used frequently during tooth anatomy study.

5 天之前 · Molar infraocclusion may cause local malalignment, with neighboring teeth tipping toward the affected tooth. 3, 4, 17 This can also affect other teeth in the same arch, causing the midline to deviate toward the affected tooth and the adjacent distal molar, which remains located further distally. 6 The opposite arch may also be affected, as the opposing tooth tends to overerupt. 5 Wider effects ...

2016年11月14日 · The radicular groove is a developmental groove which is usually found on the palatal or lateral aspects of the maxillary incisor teeth. The present case is a maxillary lateral incisor with a small second root and a deep radicular groove. The developmental groove caused a combined periodontal-endodontic lesion. Methods.

2015年1月4日 · The primary difference in development is that the lingual cusp, which is extremely well formed, develops from the single lingual lobe. In anterior teeth the lingual lobe forms the cingulum of the incisors and canines. In premolars, this single lingual lobe forms an extremely well-developed lingual cusp.

6 天之前 · Dentinogenesis imperfecta (DGI) is a tooth development disorder. It causes weak, brittle teeth that wear down or break easily. People with this condition have see-through (translucent) teeth that are blue-gray or yellow-brown in color. Dentinogenesis imperfecta can affect primary (baby) teeth or permanent (adult) teeth, and symptoms can appear ...

The radicular groove is a developmental groove which is usually found on the palatal or lateral aspects of the maxillary incisor teeth. The present case is a maxillary lateral incisor with a small second root and a deep radicular groove.