Fused roots molar

The fusion will start at the top of the crown and travel possibly to the apex of the root. When a dentist counts the teeth, they notice that there is a missing tooth. Fusion can also occur also with a supernumerary (extra) tooth resulting in a normal count of teeth. A substantial percentage, of all molars , had fused roots.

In geminated teeth, division is usually incomplete and in a large tooth crown that has a single root and a single canal.

Both gemination and fusion are prevalent in primary dentition, with incisors being more affected. Tooth gemination, in contrast to fusion , arises when two teeth develop from one tooth bud. When the anomalous tooth appears to be two separate teeth, it appears that the patient has an extra tooth, although they have a normal number of tooth roots. Fused tooth roots - More common than the occurrence of extra roots is the issue of multi-rooted teeth (premolars, molars ) having fused roots. The mandibular second molar is often described as having anatomic and morphologic similarities to the mandibular first molars and having one mesial and one distal root , however, one of the major morphologic variants in these teeth is the occurrence of a fused mesial and distal root.

One was actually an extra tooth fused with the one that was supposed to be there. When her permanent teeth came in she had the same two teeth fused together.

These teeth were also fused together at the root. At this stage of development, physiologic resorption of the primary tooth root has already started and the germ of the permanent tooth has moved to a position approximately in the axis of the predecessor. Tooth anomalies with variations in root form.

A tooth that is an obvious maxillary molar is found with four roots fused to each other, but is severely dilacerated at the apical third. The roots of molar teeth were studied radiographically in members of a family of English–German ancestry in which there was no consanguinity. Taurodont, pyramidal (single conical root) and fused molar roots were common.

Other ectodermal and mesodermal anomalies (unusual upper lip, glaucoma, syndactyly and clinodactyly) were also present. However, if the fused teeth are counted as one tooth, the child will be missing a tooth. Gemination and fusion are most common in the upper front teeth, but they can also occur in the lower teeth. Thus, a maxillary molar containing a distinct MB canal and a C-shaped canal which extends from the DB to the P, the root, and canal configuration of the tooth would be denoted as MB, C -DB-P (Figure 2(c)). This naming pattern would also shed light on the possibility of fused roots that contain the C-shaped canal.

When this occurs the tooth stops erupting and stays in the same place. As the other teeth beside the ankylosed tooth erupt, they will tip due to the ankylosed tooth not moving. Teeth whose roots are fused together (either partially or fully), especially if they have fused into a conical shape (like that of a pointed ice cream cone), are typically easier to remove.

Erupted teeth that have conically fused roots can be astoundingly easy to extract.

Conversely, if the roots of the permanent tooth are more than ⅔ complete, the eruption of the permanent tooth will be accelerated. Any molar that had one root or whose roots were fused apical to the usual furcal position was considered a molar with fused roots (Figs. 2). This included molars with fusion of one-third or less of the roots and molars with fusion of entire root surfaces.

A tooth was considered fused regardless of location of the fusion. Usually, when a tooth is removed by a dentist, the roots are taken out with it. If this is the case, the roots need to be surgically removed. Incidentally, even the left maxillary first molar had a similar morphology with palatal roots and a single fused buccal root with only canal (Fig. 2).

The Department of Conservative Dentistry and Endodontics, Meenakshi Ammal Dental College aReader. Maxillary molar with fused buccal roots containing distinct MB and DB canal denoted by addition of the letter to the names of the canals in the fused root, that is, MBF, and DBF. Molar root fusion is one of the most commonly found anomalies in the development of root morphology. It is more common in the third molars, followed by second molars, and less often in the first molars, in both arches. Root fusion is found more frequently in maxillary than in mandibular molars.

Upper molar and premolar teeth often have their roots in close proximity to the sinus. Fusion is the incomplete attempt of two tooth buds to fuse into one, however gemination is the incomplete attempt of one tooth bud to divide into two. Clinically, the crowns of the teeth appear to be melded tighter, with a small groove between the mesial and distal sections4 but on the fused teeth radiographs, there will be two distinct.

In that case to extract this tooth the extraction needs to be surgical , which means a raised flap of the gum is needed and usually bone and root ressection done, the extraction can be time consuming and usually needs a suture to close the wound.